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The question has a set of four statements. Each statement has three segments. Choose the alternative where the third segment in the statement can be logically deduced using both the preceding two, but not just from one of them.

1. MD is an actor. Some actors are pretty. MD is pretty.
2. Some men are cops. All cops are brave. Some brave people are cops.
3. All cops are brave. Some men are cops. Some men are brave.
4. All actors are pretty ; MD is not an actor ; MD is not pretty.
1. D only
2. C only
3. A only
4. B and C

from deduction rules (http://aptitude.gateoverflow.in/2346/cat1999-125#a2370)

option A ) 1.   MD is an actor

2.Some actors are pretty

given conclusion : MD is pretty. , here no conclusion as middle term(actor)  is not distributed , it violate rule 2 ) so its false

option B )1.Some men are cops

2.All cops are brave

given conclusion :  Some brave people are cops., its false bcoz it contain middle term cops , which is voilate rule 2)

option C) 1.All cops are brave.

2.Some men are cops.

given conclusion : Some men are brave. which is correct , follow all rules

option D ) 1. All actors are pretty

2. MD is not an actor

given conclusion : MD is not pretty. , its false , bcoz pretty is distributed in given conclusion (2.4), but in premise 1 its not distributed so it must be non distributed in conclusion also , hence violate rule 7 .

hence C is correct so option 2) is correct ans

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