JEE Main 2019 Chemistry question

Liquids A and B form an ideal solution in the entire composition range. At 350 K, the vapor pressures of pure A and pure B are Pa and Pa, respectively. The composition of the vapor in equilibrium with a solution containing 40 mole percent of A at this temperature is:

• (A) = 0.76; = 0.24
• (B) = 0.28; = 0.72Correct
• (C) = 0.4; = 0.6
• (D) = 0.37; = 0.63