Which of the following about face$-$to$-$face time is true?

a$.$ Meeting with and entertaining customers is an important part of the selling process.

b$.$ All significant customer relationships, especially in B$2$C selling, require face$-$to$-$face communication.

c$.$ All sales positions include an entertainment budget.

d$.$ Business entertaining is a good way to build relationships and get to know your customer within the office.

e$.$ According to one study, $91$ percent of top achieving salespeople use entertainment as a way to get closer to their customers.