PLEASE SHOW WORK or explain in detail

A company just starting business made the following four inventory purchases in June:

June 1 150 units $ 390

June 10 200 units 598

June 15 200 units 630

June 28 150 units 510

$2,128

A physical count of merchandise inventory on June 30 reveals that there are 200 units on hand. Using the LIFO inventory method, the value of the ending inventory on June 30 is

a. $540.

b. $668.

c. $1,460.

d. $1,588.