With no explanation, chose the best option from "A", "B", "C" or "D". form. 4 . See Chamorro v. Puerto Rican Cars, 304 F.3d 1, 6 (1st Cir.2002) ("The effective administration of justice requires that trial courts possess the capability to manage their own affairs.”); Pinto v. Universidad De Puerto Rico, 895 F.2d 18, 19 (1st Cir.1990) ("The court has no obligation to play nursemaid to indifferent parties.”); Sonera v. Mayor, Civil No. 09-1005, 2011 U.S. Dist. LEXIS 73346, at *2 (D.P.R. July 7, 2011) (finding one year of inactivity, combined with other factors, sufficient to invoke Rule 41(b)); Robledo-Rivera v. Cartagena, 233 F.R.D. 236, 237-38 (D.P.R.2005) ("It is well known that the Court cannot sit idly waiting for plaintiff to litigate its case at its pleasure.”); Jardines Ltd. P'ship v. Exec. Homesearch Realty Serv., Inc., 178 F.R.D. 365 (D.P.R.1998)

A: holding courts have authority to dismiss a case  for want of prosecution in order to prevent undue delay in the disposition of pending cases docket congestion and the possibility of harassment of defendant
B: holding that court may refuse leave to amend because of undue delay
C: recognizing rule 48b allows courts to dismiss cases for prosecutorial delay even though the delay does not amount to a constitutional violation
D: holding leave to amend should be freely granted absent a showing of undue delay bad faith undue prejudice or futility
A.