What’s the difference between marketing and sales?

Выберите один ответ:

a. marketing is everything that you do to reach and persuade prospects and the sales process is everything that you do to close the sale and get a signed agreement or contract

b. in a successful business you can do without either process

c. marketing and sales are the same all in all

d. marketing and sales should work simultaneously, but in most companies they are departments that don't even speak to each other