All of the Following Are Covered Autos Under the Liability

All of the following are covered autos under the liability section of the PAP EXCEPT

A) a nonowned van which is driven by the insured on a regular basis.
B) a trailer owned by the named insured.
C) a borrowed auto used by the insured as a substitute for a stolen covered auto.
D) a newly acquired auto which replaces a vehicle previously described in the policy.