In a shell and tube heat exchanger, in the inner side fluid enters at 15℃ and leaves at 65℃. The shell has oil entering at 105℃ and leaving at 85℃. What is the value of correction factor coefficients R and P?

• A. R = 0.4, P = 0.55
• B. R = 0.3, P = 0.55
• C. R = 0.4, P = 0.66
• D. R = 0.3, P = 0.66