Which of the listed technique will NOT be effective in evading Anti-Virus scanner?

You are trying to package a RAT Trojan so that Anti-Virus software will not detect it. Which of the
listed technique will NOT be effective in evading Anti-Virus scanner?

A.
Convert the Trojan.exe file extension to Trojan.txt disguising as text file

B.
Break the Trojan into multiple smaller files and zip the individual pieces

C.
Change the content of the Trojan using hex editor and modify the checksum

D.
Encrypt the Trojan using multiple hashing algorithms like MD5 and SHA-1