Which of the following is the correct bit size of the Diffie-Hellman (DH) group 5?

Diffie-Hellman (DH) groups determine the strength of the key used in the key exchange process.
Which of the following is the correct bit size of the Diffie-Hellman (DH) group 5?

A.
768 bit key

B.
1025 bit key

C.
1536 bit key

D.
2048 bit key