Products X, Y, and Z are produced from the same process at a cost of $4,980. Five thousand pounds of raw material yields 2,100 X, 3,100 Y, and 1,600 Z. Selling prices are: X $2 per unit, Y $4 per unit, Z valueless The ending inventory of X is 62 units. What is the value of the ending inventory if joint costs are allocated using net realizable value? $39.20 $18.87 O $28.40. $3720