Kota Toy Corporation Manufactures Lizard Dolls in Two Departments, Molding

Kota Toy Corporation manufactures lizard dolls in two departments, Molding and Assembly. In the Molding Department, plastic is injected into a lizard-shaped mold. The dolls that come out of the molds are then transferred to the Assembly Department where hair is applied. Kota uses a weighted-average process cost system to collect costs in both departments.
On January 1, the Molding Department had 4,000 dolls in process. These dolls were 100% complete with respect to direct materials and 70% complete with respect to conversion cost. During January, Molding completed 79,000 dolls. On January 31, Molding had 7,000 dolls in work in process. These dolls were 100% complete with respect to direct materials and 25% complete with respect to conversion cost.
-How many dolls were started in the Molding Department during January?

A) 75,000
B) 76,000
C) 82,000
D) 86,000