8. In circle $8, P Q // S R, Q S$ bisects $\angle P Q R, R P$ bisects $\angle Q R S$: Among the following conclusions:
(1) $P R$ bisects $\angle S P Q$;
(2) $P R = S Q$;
(3) The area of $P Q R S$
$$
=\frac{1}{2} P P \cdot S Q
$$

which of the following is incorrect?
( )
(A) All are incorrect;
(B) Only (1);
(C) Only (2);
(D) (1) and (3);
(E) (2) and (3).
$\mathrm{C}$