3. the value of the integral d (8(x)) edx where k is a constant dx and &x) is the dirac delta function is given by (a) zero (b) sin k (c) cos k (d) - ik

3. The value of the integral d (8(x)) edx where k is a constant dx and &x) is the Dirac delta function is given by (A) zero (B) sin k (C) cos k (D) - ik