Let the centre of the parallelepiped formed by ` vec P A= hat i+2 hat j+2 hat k ; vec P B=4 hat i-3 hat j+ hat k ; vec P C=3 hat i+5 hat j- hat k` is given by the position vector (7, 6, 2). Then the position vector of the point `P` is (3,4,1) (b) (6,8,2) (1, 3, 4) (d) (2, 6, 8)