单项选择题

A.S×(T2+LBP2)1/2/LBP-D×(T/LBP)2±L×(T/LBP)
B.S×(T2+LBP2)2/LBP-D×(T/LBP)2±L×(T/LBP)
C.S×(T2+LBP2)1/2/LBP-D×(T/LBP)1/2±L×(T/LBP)
D.S×(T2+LBP2)2/LBP-D×(T/LBP)1/2±L×(T/LBP)