LetR be the ternary relation where practitioner m∈M saw patient p∈P on day d∈D. Suppose that Ann saw 148 distinct patients during the given month. Bob saw 190 distinct patients during the given month. Cyd saw 142 distinct patients during the given month. Dan saw 174 distinct patients during the given month. Each patient was seen exactly 3 times in the given month and no patient was seen by more than one practitioner that month or more than once in a single day. Determine the cardinality of the following subset of R: {(m,p,d)∈R:m is either Ann, Bob, or Cyd}