If the endpoints of the diameter of a circle are (9, 4) and (5, 2), what is the standard form equation of the circle? a) (x + 7)2 + (y + 3)2 = 5 b) (x − 7)2 + (y − 3)2 = 5 c) (x + 7)2 + (y + 3)2 = 5 d) (x − 7)2 + (y − 3)2 = 5