If X Is the Actual Amount of Income or Receipts

If X is the actual amount of income or receipts and i is the interest rate (in decimals) that could be earned on alternative uses of money that face the same risk, the present value of X in t years from now is computed by

A) (i^t) (1 + X) .
B) (X^t) (1 + i) .
C) i/(1 + X) ^t.
D) X/(1 + i) ^t.
E) X/(1 - i) ^t .