Certain medium access control protocols use Slotted-ALOHA based reservation minislots to access shared data slots, e.g., Reservation-ALOHA. Assume that there are M minislots of duration Tm each, and D data slots of duration Td each. Using a model for the protocol, we found that the R-ALOHA efficiency, , can be written as DTd+MTmTdmin(M/e,D) (a) Explain, in detail, what the denominator in Equation (1) represents. (b) Explain, in detail, where the M/e term comes from in Equation (1). (c) Explain, in detail, why there is a "min" function in Equation (1)