39. PLS BE INFMD THAT SUB VSL'S TWO KINDS OF CERTIFICATES HAVE EXPIRED. ONE IS SHIP SANITATION CONTROL CERTIFICATE AND THE OTHER IS SAFETY REQUIREMENT CERTIFICATE. According to this telex, ______.
(A) two certificates will expire
(B) two certificates have expired
(C) one of the two certificates will expire
(D) one of the two certificates have expired

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