A puzzling comprehension question

The comprehension question has been puzzling me for quite a while; please help me figure it out:
What documentation should a couple with a 7-year- old child carry when they drive a car from Canada to America?
A. A BC driver’s license, an Air NEXUS card, and a birth certificate.
B. An Air NEXUS card, a U.S. Coast Guard Merchant Marine Document, and a birth certificate.
C. Two vaild passport crads and a certified copy of a birth certificate.
D. A NEXUS card, a U.S. Coast Guard Merchant Marine Document.,and a certified copy of a birth certificate.

The given answer is C.


DOCUMENTATION NEEDED FOR BORDER CROSSING
LAND OR SEA TO THE US(INCLUDING FERRIES)
A valid passport or passport card, or a NEXUS card. (A NEXUS card is a Trusted Traveler Program that provides quick travel for pre - approved, low risk travelers through special lanes
A recent Washington State, New York or BC driver’s license.
Note: Children 15 years of age and younger require only a birth certificate or copy.(Certified copies are not required but are advised.)