Use the information below to answer the following question.

The following lots of a particular commodity were available for sale during the year:

Beginning inventory

First purchase

Second purchase

Third purchase

$10$ units at $$60$

$25$ units at $$65$

$30$ units at $$68$

$15$ units at $$75$

The firm uses the periodic system, and there are $25$ units of the commodity on hand at the end of the year.

What is the amount of inventory at the end of the year using the FIFO method?

a$.$ $$1,575$

b$.$ $$1,805$

c$.$ $$1,685$

d$.$ $$3,585$