Viruses are exceedingly small and round and simple with few genes, with the exception of which of the following?

Viruses are exceedingly small and round and simple with few genes, with the exception of which of the following? Choose at least one answer.

a) Phycodnaviruses of algae

b) Smallpox viruses with a brick shape

c) Ebola with very extended filaments

d) Small round viruses of diarrhoea