Given below are two statements: Statement I: The locus of the middle points of chords of the circle x2+ y2 = a2 which are parallel to the line y=mx is x-my = 0. Statement II: The two tangents drawn from (4, 2) to x2 + y2 = 10 are perpendicular. In the light of the above Statements, choose the most appropriate answer from the options given below :