Which of the following are true for a coupon bond?

A、Whenthecouponbondispricedatitsfacevalue,theyieldtomaturityequalsthecouponrate.;
B、Thepriceofacouponbondandtheyieldtomaturityarenegativelyrelated.;
C、Theyieldtomaturityisgreaterthanthecouponratewhenthebondpriceisbelowtheparvalue.;
D、Alloftheabovearetrue.;
E、Only(a)and(b)oftheabovearetrue