Select three ways a virus can enter a cell.

a. The virus dissolves the cell membrane and then exits the cell.

b. The virus remains inside but injects DNA or RNA out the cell.

c. The virus remains outside but injects DNA or RNA into the cell.

d. The virus dissolves the cell membrane and then enters the cell.

e. Projections on a virus match receptor sites on a cell membrane.

f. Projections on a virus do not match receptor sites on a cell membrane.​