Which three algorithms should be avoided due to security concerns? (Choose three.)

Which three algorithms should be avoided due to security concerns? (Choose three.)
A . DES for encryption
B . SHA-1 for hashing
C . 1024-bit RSA
D . AES GCM mode for encryption
E . HMAC-SHA-1
F . 256-bit Elliptic Curve Diffie-Hellman
G . 2048-bit Diffie-Hellman

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Answer: A,B,C