What is a pull strategy?

a$.$ Promotional tactics that are known in the retail trade as a way to get money from customers' wallets $($pulling the cash$)$

b$.$ Promotion tactics designed to build demand with consumers to bring them to point of sale

c$.$ Promotional tactics to enable customers to pull products from the shelves

d$.$ Promotion tactics designed to motivate distribution channel partners or intermediaries to sell the product to consumers