JEE Math Practice Question

Four persons can hit a target correctly with probabilities $${1 \over 2}$$, $${1 \over 3}$$, $${1 \over 4}$$ and $${1 \over 8}$$ respectively. if all hit at the target independently, then the probability that the target would be hit, is :

1. A.$${{25} \over {32}}$$
2. B.$${{25} \over {192}}$$
3. C.$${{1} \over {192}}$$
4. D.$${{7} \over {32}}$$