Direct Materials used total $64,750; direct labor incurred totaled $198,400; overhead totaled $394,800; Work in Process Inventory on January 1 (the beginning of the year) was $189,100; and Work in Process Inventory on December 31 was $197,600. What is the cost of goods manufactured for the year ended December 31?

a. $1,004,650

b. $657,950

c. $649,450

d. $197,600

e. none of the above