Which of the Following Accurately Describes Viruses

Which of the following accurately describes viruses?

A) They are small, cellular infectious agents that are only capable of reproducing when inside a living cell, and they can attack plants as well as animals.
B) Each is typically a piece of genetic material encased in proteins, and they can reproduce on their own.
C) They can attack plants, animals, and protozoans, and each is typically a piece of self-replicating genetic material encased in proteins.
D) Typically a piece of genetic material encased in proteins, viruses are small, noncellular infectious agents that are only capable of reproducing when inside a living cell such as those of plants, animals, fungi, protozoans, or bacteria.