If (A = (3,4)) and (C = (-7,2)) are opposite vertices of a rectangle (ABCD), then vertices (B) and (D) must lie on the circle
[x² + y² - px - qy + s = 0.]
Compute the ordered triple of real numbers ((p,q,s)).

a) ((-2, -6, 34))
b) ((2, 6, 34))
c) ((2, -6, 34))
d) ((-2, 6, 34))