A control system has the following transfer function $${\text{F}}\left( {\text{s}} \right) = \frac{{\left( {{\text{s}} - 1} \right)\left( {{\text{s}} + 1} \right)}}{{{\text{s}}\left( {{\text{s}} - 2} \right)\left( {{\text{s}} + 4} \right)}}$$
The initial value of the corresponding time function is

A. 1

B. $$\frac{1}{8}$$

C. $$\frac{7}{8}$$

D. -1

Answer: Option A