The response curve for a step input signal from a reactor is called C-curve. The variance of C-curve in a 'tanks in series model' comprising of 'm' tanks is equal to
A
m
B
$$\frac{1}{{\text{m}}}$$
C
$$\sqrt {\text{m}} $$
D
m<sup>2</sup>
Correct Answer: $$\frac{1}{{\text{m}}}$$