Considering the sysytem shown below answer the following questions.

$($a$)$ What is the flow direction?

From right to left

From left to right

$($b$)$ What kind of machine is at A$?$

pump

turbine

$($c$)$ Do you think both pipes, $AB$ and $CA,$ have the same diameter?

Yes, pipes $CA$ and $AB$ have the same diameter

No$,$ pipe CA has a smaller diameter than $AB$

No$,$ pipe $CA$ has a bigger diameter than $AB$

$($d$)$ Is there a vacuum at any point or region of the pipes?

No

At A

Between A and B