单项选择题
There are four basic elements of bond, they are
A、the par value of bond, the time to maturity of bond, the investor of bond, the issuer of bond
B、the par value of bond, the coupon rate of bond, the investor of bond, the issuer of bond
C、the par value of bond, the time to maturity of bond, the coupon rate of bond, the investor of bond
D、the par value of bond, the time to maturity of bond, the coupon rate of bond, the issuer of bond