In order to generate a pair of asymmetric keys to use during an SSH connection, please choose the correct command to use?

In order to generate a pair of asymmetric keys to use during an SSH connection, please choose the correct command to use?

A.
ssh-keygen -t dsa

B.
ssh-agent

C.
sshd

D.
ssh-agent -t dsa

E.
ssh-keyscan -t dsa