Which of the following expressions is CORRECT?

• A.  \[\frac{pq+r}{q}=p+r\]
• B.  \[\frac{p+r}{q+r}=\frac{q}{r}\]
• C.  \[\frac{pq+pr}{ps}=\frac{q+r}{s}\]
• D.  \[\frac{p(q+r)}{p+s}=\frac{q+r}{s}\]