If ‘p’ is the pressure on the cylinder, ‘d’ and ‘t’ are the diameter and wall thickness, E is the Young’s Modulus and μ is the Poisson’s Ratio, the volumetric strain (εv ) in thin wall cylinder can be given by

• A. \(\frac{{pd}}{{2tE}} \times \left( {5 - 4\mu} \right)\)
• B. \(\frac{{pd}}{{4tE}} \times \left( {5 - 4\mu} \right)\)
• C. \(\frac{{pd}}{{6tE}} \times \left( {5+ 4\mu} \right)\)
• D. \(\frac{{pd}}{{8tE}} \times \left( {5 - 4\mu} \right)\)