With no explanation, chose the best option from "A", "B", "C" or "D". in conduct which constitutes a substantial step toward the com mission of the crime, thus creating circumstances strongly corroborative of criminal intent. United States v. McDowell, 705 F.2d 426, 427-28 (11th Cir.1983); United States v. Mandujano, 499 F.2d 370, 376 (5th Cir.1974). On appeal, Moore only argues that the government failed to produce sufficient evidence that he engaged in conduct constituting a substantial step toward the commission of the crime. A substantial step must be shown by objective acts that are strongly corroborative of criminal intent. United States v. Carothers, 121 F.3d 659, 661 (11th Cir.1997). A substantial step does not require an actual exchange so long as other objective acts corroborate an intent to complete the crime. See McDowell, 705 F.2d at 427-28 (<HOLDING>). Here, there was sufficient evidence for the

A: holding that the defendants prior drug conviction for simple possession did not constitute a controlled substance offense because the plain language of  4b12b requires that the prior conviction involve possession with intent to distribute
B: recognizing step transaction doctrine whereby courts must consider all steps of transaction in light of entire transaction so that substance of transaction will control over form of each step
C: holding that evidence that defendants had participated in several prior drug transactions was properly admitted to establish defendants intent to distribute narcotics
D: holding that the defendant had completed a substantial step toward possession with intent to distribute despite defendants refusal to complete the transaction based on acts including 1 a prior drug transaction 2 recorded phone conversations about a possible cocaine deal 3 defendants trip to the site of the deal and 4 defendants conversations with the informant at the location of the deal
D.