Multiple choice: explain solution

Cole Co. began constructing a building for its own use in January 20X4. During 20X4, Cole incurred interest of $50,000 on specific construction debt and $20,000 on other borrowings. Interest computed on the weighted-average amount of accumulated expenditures for the building during 20X4 was $40,000. What amount of interest cost should Cole capitalize?

A) $20,000.

B) $40,000

C) $50,000

D) $70,000