In January, Angela Books a Cottage from Summer Tours Co

In January, Angela books a cottage from Summer Tours Co for £700 for use in August. According to the contract, half of the fee is due by 1 June and the remainder by 1 August. Angela's husband, Rodney, is wheelchair bound and Summer Tours agrees to add wheelchair access to all their facilities by the time he arrives. By mid-April, all wheelchair ramps have been completed, costing a total of £300. In the middle of May, a forest fire decimates all of Summer Tours' cottages, frustrating its contract with Angela. What are the financial consequences of frustration?

A) Angela is still liable for the £700 fee.
B) Angela is not liable for the fee, but Summer Tours can claim £300 from her as 'just expenses' for the construction of the wheelchair ramps.
C) Angela is not liable for the booking fee, but Summer Tours can claim a 'just sum', determined by the court, for the construction of the wheelchair ramps.
D) Angela is not liable for the booking fee and Summer Tours can claim nothing from her for the construction of the wheelchair ramps.