What type of Virus is shown here?

A.
Cavity Virus

B.
Macro Virus

C.
Boot Sector Virus

D.
Metamorphic Virus

E.
Sparse Infector Virus

Explanation:
A sparse infector viruses use conditions before infecting files. Examples include files infected only on the 10th execution or files that have a maximum size of 128kb. These viruses use the conditions to infect less often and therefore avoid detection