Upon receiving a digital certificate, what are three steps that a Cisco ASA will perform to authenticate the digital cer

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Upon receiving a digital certificate, what are three steps that a Cisco ASA will perform to authenticate the digital certificate? (Choose three.)

A. The identity certificate validity period is verified against the system clock of the Cisco ASA.
B. Identity certificates are exchanged during IPsec negotiations.
C. The identity certificate signature is validated by using the stored root certificate.
D. The signature is validated by suing the stored identity certificate.
E. If enabled, the Cisco ASA locates the CRL and validates the identity certificate.