The value of the expression (cos⁶θ + sin⁶θ – 1)(tan²θ + cot²θ + 2) is

The value of the expression (cos⁶θ + sin⁶θ – 1)(tan²θ + cot²θ + 2) is:

(a)          0

(b)          -1

(c)           -3

(d)          1

Sol: