We Can Think About the Interest Rate as the "Price

We can think about the interest rate as the "price" of capital because

A) the interest rate determines the MRP of the capital, which determines its price.
B) the interest rate represents the value the firm avoids paying to lenders by purchasing the capital instead.
C) this is the amount the firm earns by purchasing the capital.
D) firms use financial capital to purchase physical capital and the interest rate is the "price" of financial capital.
E) the interest rate determines the equilibrium level of investment demand.