# The relation between pressure $p$ and volume $v$ is given by $pv^{\large\frac{1}{4}}$=Constant. If the percentage decrease in volume is $\large\frac{1}{2}$, then the percentage increase in pressure is

$(a)\;-\frac{1}{8}\quad (b)\;\frac{1}{16} \quad (c)\;\frac{1}{8} \quad (d)\;\frac{1}{2}$

(c) $\frac{1}{8}$