When Computing the Amount of Interest Cost to Be Capitalized

When computing the amount of interest cost to be capitalized, the concept of "avoidable interest" refers to

A) the total interest cost actually incurred.
B) a cost of capital charge for equity.
C) that portion of total interest cost which would not have been incurred if expenditures for asset construction had not been made.
D) that portion of average accumulated expenditures on which no interest cost was incurred.