Skysong, Inc. has the following inventory data:

July 1 Beginning inventory 25 units at $16 $400
7 Purchases 86 units at $16 1376
22 Purchases 12 units at $18 216
$1992

A physical count of merchandise inventory on July 30 reveals that there are 39 units on hand. Using the LIFO inventory method, the amount allocated to cost of goods sold for July is:

[Entry field with incorrect answer]

a.$624.

b.$648.

c.$1344.

d.$1368.