Which of the following statements about the phaeoviruses, members of the phycodnavirus family, is FALSE?

A) They infect the multicellular brown algae.
B) They integrate their viral genome into the host cell genome.
C) They are found in both marine and freshwater environments.
D) They only infect the free-swimming gametes of their host.
E) Productive replication of the virus makes the host sterile.