Which of the Following Statements Is Correct,assuming Positive Interest Rates

Which of the following statements is correct,assuming positive interest rates and other things held constant?

A) A 5-year, $250 annuity due will have a lower present value than a similar ordinary annuity.
B) A 30-year, $150,000 amortized mortgage will have larger monthly payments than an otherwise similar 20-year mortgage.
C) A typical investment's nominal interest rate will always be equal to or less than its effective annual rate.
D) If an investment pays 10% interest, compounded annually, its effective annual rate will be less than 10%.