Directions for the following questions:

Study the following information carefully and answer the questions given below it:

There are five friends 1, 2, 3, 4 and 5. Two of them are business men while the other three belong to different occupations viz., medical, engineer and legal.
one business man and the lawyer stay in the same locality D, while the other three stay in three different lacalities A, B and C.
Two of these five persons are hindus while the remaining three come from three different communities viz. Muslim, Christian and Sikh.
The lawyer is the oldest in age while one of the business men who runs a factory is the youngest.
The other business man is a cloth merchant and agewise lies between the doctor and the lawyer.
4 is a cloth merchant and stays in locality D while 5 is a Muslim and stays in locality C.
The doctor is a christian and stays in locality A, 2 is a sikh while 1 is a hindu and runs a factory.

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What is 3's occupation?