P and Q are two points on the curve y = ...

`P` and `Q` are two points on the curve `y = 2^(x+2)` in the rectangular cartesian coordinate system such that `bar(OP).barC=-1 and bar(OQ).barC=2`. where `barc` is the unit vector along the positive direction of the x-axis. Then `bar(OQ)-4bar(OP)=` (A) `3i+8j` (B) `4i+6j` (C) `2(3i+4j)` (D) `(4i+3j)`

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