The evaporating rate R from a clean surface is related to the equilibrium vapor pressure Pe (in pascal) of the evaporating species (M is the molecular weight in gm) by a relation):a) \(R = 4.43 \times {10^{ - 4}}{\left( {\frac{M}{T}} \right)^{\frac{1}{2}}}{P_e}\)b) \(R = 4.43 \times {10^{ - 4}}{\left( {\frac{M}{T}} \right)^{}}{P_e}\)c) \(R = 4.43 \times {10^{ - 4}}{\left( {\frac{M}{kT}} \right)^{\frac{1}{2}}}{P_e}\)d) \(R = 4.43 \times {10^{ - 4}}{\left( {\frac{M}{T}} \right)^{\frac{3}{2}}}{P_e}\)Choose the correct option:

• A. is correct but c) is wrong
• B. is wrong but d) is correct
• C. Both a) and b) are correct
• D. a), b) and d) are correct