JEE Main 2021 Chemistry question

200 mL of 0.2 M HCl is mixed with 300 mL of 0.1 M NaOH. The molar heat of neutralization of this reaction is –57.1 kJ. The increase in temperature in °C of the system on mixing is x.The value of x isinteger) [Given : Specific heat of water = 4.18 J Density of water = 1.00 g ] [Assume no volume change on mixing]