What OpenSSL command will generate a certificate signing request (CSR) using the private key file privkey.pem?
A.
openssl req key privkey.pem out cert.csr
B.
openssl req new key privkey.pem out cert.csr
C.
openssl gencsr key privkey.pem out cert.csr
D.
openssl gencsr new key privkey.pem out cert.csr