Question 13 3 pts Which statement is true? O Bond prices vary directly with changes in interest rates: as interest rates rise, bond prices rise and as interest rates fall, bond prices fall. O Bond prices vary directly with changes in interest rates: as interest rates rise, bond prices fall and as interest rates fall, bond prices rise. Bond prices vary inversely with changes in interest rates: as interest rates rise, bond prices fall and as interest rates fall, bond prices rise. O Bond prices vary inversely with changes in interest rates: as interest rates rise, bond prices rise and as interest rates fall, bond prices fall. O None of the above