Which statement(s) accurately represent what Drucker means when he says that marketing "is the whole business seen from the point of view of the final result, that is, from the customer's point of view"?

Group of answer choices

(a) A business should know the customer so well that the product or service fits him or herand the product sells itself.

(b) A business must be more product-oriented than market-oriented.

(c) A business must base its rewards on its contribution to the customer.

Both (a) and (b)

Both (a) and (c)

Both (b) and (c)

All of these statements

None of these statements