NEET 2022 Chemistry question

A 10.0 L flask contains 64 g of oxygen at 27ºC. (Assume O gas is behaving ideally). The pressure inside the flask in bar is : (Given R = 0.0831 L bar K mol)

• (A)4.9Correct
• (B)2.5
• (C)498.6
• (D)49.8