When copper reacts with a $50\%$ nitric acid solution, nitrogen monoxide is given off and a blue solution is formed. The balanced equation for this reaction is shown. $p\,\text{Cu} + q\,\text{HNO}_3 \rightarrow r\,\text{Cu(NO}_3)_2 + s\,\text{H}_2\text{O} + t\,\text{NO}$ What are the values of the integers $p$, $q$, $r$, $s$ and $t$?
- A$p=1,\ q=4,\ r=1,\ s=2,\ t=2$
- B$p=2,\ q=6,\ r=2,\ s=3,\ t=2$
- C$p=2,\ q=8,\ r=2,\ s=4,\ t=4$
- D$p=3,\ q=8,\ r=3,\ s=4,\ t=2$