Which of the Following Is True About Documentary Collection or Draft

Which of the following is true about documentary collection or draft as a method of payment?

A) It is an internationally recognized letter issued by a bank on behalf of its client, the purchaser.
B) It represents the bank's guarantee to pay the seller, provided that the conditions specified in the letter are fulfilled.
C) It is the ideal method of payment because a company has immediate use of the money.
D) It involves wire transfers or the acceptance of credit cards.
E) It requires the buyer to pay the face amount either on sight or on a specified date in the future.