Let C be a curve which is locus of the point of the intersection of lines x = 2 + m and my = 4 – m. A circle (x – 2)2 + (y + 1)2 = 25 intersects the curve C at four points P, Q, R and S. If O is the centre of curve ‘C’ than OP2 + OQ2 + OR2 + OS2 is
(a) 25
(b) 50
(c) 25/2
(d) 100
