A company manufactures two related products, a Gold model and a Titanium model. Overhead costs relating to batch setups amount to $30,000 and overhead costs relating to parts assembly are $90,000. The following activity and cost information has been compiled: Product Batches Parts Machine Hours Gold 9 4 8000 Titanium 3 8 4000 Assume the company uses activity based costing and compute the overhead rate for parts assembly activity which is based on the number of parts as the cost driver. a. $11,250.00 b. $7,500.00 c. $22,500.00 d. $10,000.00