PLEASE SOLVE A AND B

\"(0 = um) r) dt a - T(t): is the body temperature at time t - A = hA/C is a proportionality constant (Where h is the heat transfer coefcient, A is the contact area between the body and medium, and C is the heat capacity.) - dT(t) is positive, and therefore the constant it is always positive. - Ta is the initial temperature of the body. A. In order to work with equations like these sometimes you might need to do some simplifications. For example if there are constants and parameters in your equation, you might need to give them particular values. If you have more than one W, you will need to focus on one and set the others as constants. What simplications can you do in your equation? Explain why the values you chose for your simplifications are reasonable (maybe the paper already gives you some information) B. After applying your simplications, what will the differential equation look like