Ann owns a shop selling prints.She placed an advertisement in the Friday edition of Free Ads:'Unique opportunity to own Howard print 600 cash. Offer valid for one day only-tomorrow Saturday'.

On Saturday, Di asked Ann if she would take a cheque for 500; but she refused to accept the cheque and told her she could not have the print.

Later that day Ann sold the print to Elvis.

In the context of the rules governing the creation of contracts you are required to answer the following:

(a)Describe the precise legal nature Ann's advertisement;

(b)Explain whether Di has any right of action against Ann.