Which of the following has maximum density ?

1.	Which of the following has maximum density ?
Answer» `O_2` at `25^@C` and 1 ATM `O_2` at `0^@C` and 2 atm `O_2` at `273^@C` and 1 atm `O_2` at `0^@C` and 1 atm ANSWER :B

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