Theta Inc. uses normal costing and applies overhead based on direct material costs. The predetermined overhead rate for the current year is 250% of direct material costs. During the year, $3,500,000 of direct material costs and $4,000,000 of direct labor costs were incurred. Theta's applied overhead is:
a. $9,375,000.
b. $1,600,000.
c. $8,750,000.
d. $1,400,000.