$y = A\sin \frac{{2\pi }}{\lambda }\,(v\,t - x)$.
On putting values $y = 0.2\sin \frac{{2\pi }}{{60}}(360\,t - x)$
$\Rightarrow$ $y = 0.2\sin 2\pi \,\left( {6\,t - \frac{x}{{60}}} \right)$
$(A)$ a high-pressure pulse starts traveling up the pipe, if the other end of the pipe is open.
$(B)$ a low-pressure pulse starts traveling up the pipe, if the other end of the pipe is open.
$(C)$ a low-pressure pulse starts traveling up the pipe, if the other end of the pipe is closed.
$(D)$ a high-pressure pulse starts traveling up the pipe, if the other end of the pipe is closed.