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The probabilities that a student passes ...

The probabilities that a student passes in Mathematics, Physics and Chemistry are m, p and respectively. Of these subjects the student has 75% chance of passing in atleast one, a 50% chance of passing in atleast two and a 40% chance of passing in exactly, two, which of the following relations are true.

A

`p+m+c=19/20`

B

`p+m+c=27/20`

C

`p mc=1/20`

D

`p mc=1/8`

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The correct Answer is:
B
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