what is the equation to use?

In the image below, water flows through a pipe. If the pressure in the wider cross- sectional area is equal to 100 kPa and the speed of the water in that section is 2 m/s, what is the new pressure in the smaller crosssectional area if the speed in the smaller cross- sectional area of the pipe is 4 m/s? Select one: a. 200 kPa A b. 50 kPa I ' c. 94 kPa \"' d. 132 kPa