Which one of the following represents a palindromic sequence

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Which one of the following represents a palindromic sequence in DNA?

1. 5' - GAATTC - 3' 3' - CTTAAG - 5'
2. 5' - CCAATG - 3' 3' - GAATCC - 5'
3. 5' - CATTAG - 3' 3' - GATAAC - 5'
4. 5' - GATACC - 3' 3' - CCTAAG - 5'

Correct Option: A

A palindromic sequence is a nucleic acid sequence (DNA or RNA) that is the same whether read 5' (five-prime) to 3' (three prime) on one strand or 5' to 3' on the complementary strand with which it forms a double helix.
5' - GAATTC - 3'
3' - CTTAAG - 5'
It is a palindromic sequence of DNA cut by restriction enzyme Eco RI.