Ann owns a shop selling prints. She placed an advertisement in the Friday edition of her local paper stating:

'Unique opportunity to own a Bell prints for Kshs, 5000 cash. Offer valid for one day only - tomorrow Saturday.'

When Con saw the advert, he immediately posted a letter of acceptance.

On Saturday, Di asked Ann if she would take a cheque for KShs 5000, but she refused to accept the cheque and told her she could not have the print. Later that day Ann sold the print to Evi. Consequently, on Monday morning Con's letter arrived.

Required:

In the context of the rules governing the creation of contracts and case law:

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

(b) Explain whether Con any right of action against Ann; and

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