With no explanation, chose the best option from "A", "B", "C" or "D". search at the police station, a small amount of marihuana was recovered from the defendant’s back pocket. In support of his decision to deny the defendant’s motion to suppress the gun and marihuana, the judge found that Clinton reasonably concluded, after he saw the pipe with a bore, that the object was a gun. This finding was supported by the evidence. Clinton was entitled to apply his experience of twenty years as a Boston police officer to draw conclusions from his observations, and the judge, in turn, was entitled to consider such experience in making his factual findings. Commonwealth v. Silva, 366 Mass. 402, 407 (1974). It was proper for Clinton to assume that Ferguson was carrying the gun without a license. See Commonwealth v. Ferrioli, 10 Mass. App. Ct. 489, 492 (1980) (<HOLDING>); Commonwealth v. Jones, 372 Mass. 403, 406

A: holding that when defendant was guilty of burglary but the only evidence that he was armed was from his own statement existence of the firearm went only to the degree of the offense and was not as an element of proof
B: holding that the searchincidenttoalawfularrest rule does not apply to an officers search of the defendants vehicle where the officer while subsequently arresting the defendant for druglaw violations based upon that search never actually arrested the defendant for the speeding violation which gave the officer the probable cause to arrest the defendant before the search but rather only issued a citation and reasoning that the rules underlying twin rationales of officer safety and evidence preservation were only minimally present and not present at all respectively in the context of a traffic citation
C: holding that an arresting officer who had made a warrantless search of the defendants person on the basis of information from a reliable source that the defendant was armed could properly assume that the defendant did not have a license to carry a firearm
D: holding that the government was required to prove that the defendant lacked a license to possess a firearm but not that the defendant possessed the firearm for any duration of time
C.