Oil $($r $=925$ kg$/$m$3)$ is flowing through a pipeline at a constant speed when it encounters a vertical bend in the pipe raising it $4\mathrm{.}0$ m$.$The cross sectional area of the pipe does not change.$$What is the difference in pressure $($PB $$ PA$)$ in the portions of the pipe before and after the rise?

$$

$+7\mathrm{.}2105$ Pa

$3\mathrm{.}6104$ Pa

$+5\mathrm{.}1105$ Pa

$7\mathrm{.}2105$ Pa

$+3\mathrm{.}6104$ Pa