Answer:
a. $2,124,000
b. $1,652,000
Step-by-step explanation:
Absorption costing 
Product Cost = All Manufacturing Costs
Therefore,
Product Cost = $36 + $ 26 + $ 8 + $ 20
 = $90
Thus, Cost of the finished goods inventory = 23,600 units × $90
 = $2,124,000
Variable Costing 
Product Cost = Variable Manufacturing Costs
Therefore,
Product Cost = $36 + $ 26 + $ 8 
 = $70
Thus, Cost of the finished goods inventory = 23,600 units × $70
 = $1,652,000