Trip Corp. began business in 2015. on December 31, 2015, Trips single pool of inventory was valued at $300,000, using the Dollor value LIFO inventory method. on December 31,2016 , the value of Trip's inventory at current costs was $450,000. the 2016 year end cost index was 120. what was the value of Trips inventory at the end of 2016 using the dollar value LIFO method. please explain

A) 375k

B) 390k

C) 480k

D) 540k