Oil ( = 925 Kg/m³)is Flowing Through a Pipeline at a Constant

Oil ( = 925 kg/m³) is flowing through a pipeline at a constant speed when it encounters a vertical bend in the pipe raising it 4.0 m.The cross sectional area of the pipe does not change.What is the difference in pressure (P_B - P_A) in the portions of the pipe before and after the rise?

A) +2.4 × 10⁴ Pa
B) -3.6 × 10⁴ Pa
C) +5.1 × 10⁵ Pa
D) -7.2 × 10⁵ Pa
E) -1.8 × 10³ Pa