A public key infrastructure (PKI) is being set up for a logistics company, utilizing OpenSSL hosted on Red Hat Enterprise Linux. Which of the following commands can the team use, when setting up the PKI, to create an encrypted RSA private key?
A. openssl genrsa -aes256 -out server.key 1024 (correct)
B. openssl rsa -in server.key -pubout (wrong)
C. openssl rsa -check -in server.key (wrong)
D. openssl x509 -x509toreq -in cert.pem -out server.csr -signkey server.key (wrong)