Water flows through a vertical contraction form a pipe of a diameter d to another of diameter of d/2. Exit velocity from bigger pipe to contraction is 2 m/s and pressure 200 kN/m2. If height of contraction measures 2 m, the pressure at exit of contraction will be nearly to

• A. 192 kN/m2
• B. 150 kN/m2
• C. 165 kN/m2
• D. 175 kN/m2