A cell phone manufacturer randomly selects 5 of every 50 phones from the assemble line and tests them. If at least 4 of the 5 pass inspection, the batch of 50 is considered acceptable. Find the probability that a batch of 50 phones are considered acceptable given the following information:
A) the batch of 50 phones contains 2 defectives

B) the batch of 50 phones containes no devectives

C) the batch of 50 phones contains 3 defectives