Charles Wants to Buy a John Lennon Lithograph Over the Internet,but

Multiple Choice

Charles wants to buy a John Lennon lithograph over the Internet,but he is unwilling to pay for it until he inspects it to ascertain authenticity.The auction site through which he purchases the painting agrees to hold his money until he tells them to release it to the seller.This is an example of a(n)

A) escrow service.
B) trustmark.
C) warranty.
D) verification.