Jika \overrightarrow(P Q)=(2,0,1), \overrightarrow(P

Jika \overrightarrow(P Q)=(2,0,1), \overrightarrow(P R)=(1,1,2) dan \overrightarrow(P S)=(1/2) \overrightarrow(P Q) maka \overrightarrow(R S)=.... a. (0,-1,-(3/2)) b. (-1,0, (3/2)) c. ((3/2), 1,10) d. ((1/2), 0,1) e. (1,-1,1)