Which of the following statements is a tautology?

Consider the following statements:

$P:$ Ramu is intelligent.

$Q:$ Ramu is rich.

$R:$ Ramu is not honest.

The negation of the statement "Ramu is intelligent and honest if and only if Ramu is not rich" can be expressed as:

Let
$\mathit{p}:$ Ramesh listens to music.
$\mathit{q}:$ Ramesh is out of his village
$\mathit{r}:$ It is Sunday
$\mathit{s}\mathbf{:}$ It is Saturday

Then the statement "Ramesh listens to music only if he is in his village and it is Sunday or Saturday" can be expressed as