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Consider the following statements regarding the pressure measured at a point in a fluid.

$\text{S}1$: Absolute pressure is gauge pressure plus atmospheric pressure.
$\text{S}2$: Gauge pressure is measured by considering absolute zero pressure as datum.
$\text{S}3$: Absolute pressure is measured by considering atmospheric pressure as datum.
$\text{S}4$: Vacuum pressure is negative pressure obtained by subtracting absolute pressure from atmospheric pressure.

Which ONE of the following options lists all the TRUE statements?

  1. $\text{S}1$ and $\text{S}2$
  2. $\text{S}2$ and $\text{S}3$
  3. $\text{S}1$ and $\text{S}4$
  4. $\text{S}1, \text{S}2$, and $\text{S}4$

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