Before/before/ride/parade/give/speench

before/before/ride/parade/give/speench
A,Before the queen was riding in the parade,she has given a speench
B,Before the queen rode in the parade,she was giving a speench
C,Before the queen had ridden  in the parade,she gave  a speench
D,Before the queen rode  in the parade,she gave a speench
Có phải C ko mn áp theo công thức Before+S+V(QKHT)+S+V(qk),ai chọn đáp án+giải thik hộ e với :0