Consider the following statements related to a horizontal venturimeter.

A. The velocity of flow in the main pipe is greater and the pressure is lesser than that at the throat section.

B. The velocity of flow in the main pipe is lower and the pressure is larger than that at the throat section.

C. The pressure difference between the main pipe and throat section is positive.

D. The pressure difference between the main Y pipe and throat section is negative.

Which of these statements are NOT correct?