JEE Math Practice Question

Let EC denote the complement of an event E. Let E1 , E2 and E3 be any pairwise independent events with P(E1) > 0 and P(E1 $$ \cap $$ E2 $$ \cap $$ E3) = 0. Then P($$E_2^C \cap E_3^C/{E_1}$$) is equal to :

1. A.$$P\left( {E_3^C} \right)$$ - P(E2)
2. B.$$P\left( {E_2^C} \right)$$ + P(E3)
3. C.$$P\left( {E_3^C} \right)$$ - $$P\left( {E_2^C} \right)$$
4. D.P(E3) - $$P\left( {E_2^C} \right)$$