问一道GWD

fytpyys

没图怎么解啊

长滩

In the figure shown, the circle has center O and radius 50, and point P has coordinates (50,0).  If point Q (not shown) is on the circle, what is the length of line segment PQ ?
(1)      The x-coordinate of point Q is – 30.
(2)      The y-coordinate of point Q is – 40.
    
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
答案是A，非常不解请哪位NN指教一下。