Three vectors `vecP,vecQ " and " vecR` are shown in the figure. Let S be any point on the vector `vecR`. The distance between the points P and S is `b|vecR|`. The general relation among vectors` vecP,vecQ " and " vecS` is:
A. `vec(S)=(1-b)vecP+b^(2)vecQ`
B. `vec(S)=(b-1)vecP+bvecQ`
C. `vec(S)=(1-b)vecP+bvecQ`
D. `vec(S)=(1-b^(2))vecP+bvecQ`
