Which of the following statement is correct?

a. Bonds with high coupon payments have greater interest rate risk.

b. Bonds rated above Baa (or BBB) noninvestment-grade bonds are called speculative-grade bonds, high-yield bonds, or junk bonds.

c. Vanilla bonds have coupon payments that are fixed for the life of the bond, with the principal being repaid at maturity.

d. A call provision gives bond investors the option to convert their bonds into the firm's common stocks at a predetermined price called as the call price.

e. All the answers are correct.