Cost of goods sold:（ ）。

A．will always be lower when using LIFO rather than FIFO, during a period of rising prices
B．is the number of units of inventory sold multiplied by cost per unit of inventory.
C．is the number of units of inventory purchased multiplied by cost per unit of inventory.
D．will be the same amount when using LIFO or FIFO, during a period of rising prices.