Water vapour at 90 kPa and 150°C enters a subsonic diffuser with a velocity of 150 m/s and leaves the diffuser at 190 kPa with a velocity of 55 m/s, and during the process, 1.5 kJ/kg of heat is lost to the surrounding. For water vapour, cp is 2.1 kJ/kgK. The final temperature of water vapour will be

• A. 154°C
• B. 158°C
• C. 162°C
• D. 166°C