Considering Capital, Marginal Factor Cost Is Defined as the

Considering capital, marginal factor cost is defined as the

A) extra output produced by employing one more unit of capital (or loanable funds)
B) extra total cost attributed to employing one more unit of capital (or loanable funds)
C) contribution of capital (or loanable funds) to the final product
D) change in capital (or loanable funds) required to produce one more unit of output
E) change in total revenue contributed by an extra unit of capital (or loanable funds)