Jenny owns a clothing shop. Jenny buys all the clothing for her shop and although her manager, Shirley, runs the shop in Jenny's absence, she has no authority to buy for the shop. On one occasion Shirley, without Jenny's authority buys a batch of shirts from a wholesaler, which she thinks Jenny will like. When Jenny hears of Shirley's transaction she agrees to keep the shirts. However, when the wholesaler claims payment from Jenny she refuses to pay, arguing that Shirley lacked authority to perform the transaction. Advise the wholesaler