Read the following and identify the correct statements.
(a) Viruses cause diseases like mumps, small pox, herpes and influenza.
(b) In plants, the symptoms for viral infection can be mosaic formation, leaf rolling and curling, yellowing and vein clearing, etc.
(c) Bacterial viruses are usually double-stranded RNA viruses.

• A

  a and b only

• B

  b and c only

• C

  a and c only

• D

  a, b and c