Which of the Following Describes the Primary Distinguishing Feature of the Prasinoviruses

Which of the following describes the primary distinguishing feature of the prasinoviruses?

A) They have the largest virions of any known virus.
B) They have the largest genome of any known virus.
C) They produce more virions per round of replication than any known virus.
D) They infect the smallest free-living eukaryotic cell.
E) They only replicate inside the nucleus of their host cell.