Which of the following parameters should be set in main.cf to enable TLS in Postfix?
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A.
smtpd_tls_cert_file, smtpd_tls_key_file, smtpd_tls_CAfile, smtpd_use_tls
B.
smtpd_tls_key_file, smtpd_tls_CAfile, smtpd_use_tls, smtpd_tls_pem_file
C.
smtpd_tls_CAfile, smtpd_use_tls, smtpd_tls_pem_file, smtpd_tls_cert_file
D.
smtpd_use_tls, smtpd_tls_pem_file, smtpd_tls_cert_file, smtpd_tls_key_file