B. Major credit card is the most widely used and accepted form of payment for making business travel arrangements.
Major credit cards are issued for business purposes. This is to ensure that all expenses that are business related are all accounted for in compliance to documentation requirements.
A 30-day accounts payable is usually used for business inventory not for business travel arrangement. It is also unwise to use cash or personal check for business travel arrangement mainly because cash can't be traced accordingly and personal check is against the personal account of the individual not of the company.