Equation of Boyle's law is [DPMT 2005]

• A.                 \[\frac{dP}{p}=-\frac{dV}{V}\]  
• B.                 \[\frac{dP}{P}=+\frac{dV}{V}\]
• C.                 \[\frac{{{d}^{2}}P}{P}=-\frac{dV}{dT}\] 
• D.                 \[\frac{{{d}^{2}}P}{P}=+\frac{{{d}^{2}}V}{dT}\]