Figure 4.1 shows the orientation of two vectors **u** and **v** in the XY plane.

If **u **=a cap i + b cap j and

**v** = p cap i + q cap j

which of the following is correct?

(a) a and p are positive while b and q are negative.

(b) a, p and b are positive while q is negative.

(c) a, q and b are positive while p is negative.

(d) a, b, p and q are all positive.