Let two planes p1:2x−y+z=2, and p2:x+2y−z=3 are given. The equation of the plane through the intersection of P1 and P2 and the point (3,2,1) is
A. 3x−y+2Z−9=0
B. x−3y+2z+1=0
C. 2x−3y+z−1=0
D. 4x−3y+2Z−8=0