Response to the following problem:
A sale of merchandise on account for $6,400 is subject to a 7% sales tax.
(a) Should the sales tax be recorded at the time of sale or when payment is received?
(b) What is the amount of the sale?
(c) What is the amount of the increase to Accounts Receivable?
(d) What is the title of the account in which the $448 ($6,400 × 7%) is recorded?