Question {a}: Whilst perusing a catalogue, David sees an advertisement fer sale of second-hand books at the University.f co-op bookshop as follows \"Up to sets off on all nance textbooks. Hurry! While stocks last. If a customer spends at least $50 in store, they are entitled to a gift card with $30 credit on it which can be used anvtime over the next few months.\" David decides to visit the bookshop that afternoon and when therer observes a promotional table which had the sign \"All Finance books $1U.DU". David thought it was quite a bargain. picked up 3 books and went to the cash register handing the cashier $3D.. The cashier told David that the books were wronglyr priced and that each of them should in fact be sauce. David informs the cashier that the only reaso he came to the store was because he saw the catalogue advertising a discount promotion and insists he be sold the books at $1 fl each. David then enquired whether he could at least get the gift card with $3 credit on it if he spends more than sec in store, to which the cashier replied. "No sir, that advertisement was not meant to be taken seriouslv.\" Advise David whether there are any contracts In existence and if he has any rights under them