Tangents are drawn to the hyperbola x²/9−y²/4=1
parallel to the straight line 2x−y=1 The points of contacts of the tangents on the hyperbola are

A. (9/2√2,1/√2)
B. (−9/2√2,−1/√2)
C. (3√3,−2√2)
D. (−3√3,2√2)