A Company That Uses the Perpetual Inventory Method Purchases Inventory

A company that uses the perpetual inventory method purchases inventory for $2,000 from a vendor on account,FOB shipping point,with terms of 2/10,n/30.The company paid the shipper $100 cash for freight in.
-The company then returned $200 of damaged goods and got an allowance from the vendor.The company paid the vendor 8 days after the sale.Assuming this was the only transaction affecting inventory,and that there was no beginning balance,what would the cost basis of the inventory be?

A) $1,764
B) $1,864
C) $2,100
D) $1,900