Alf operates a garage and workshop where he restores and sells classic cars.One night a group of youths from a nearby housing estate break in and set fire tothe premises. The building and all the vehicles and equipment in it are completelydestroyed. Alf has yet to decide whether to try to re-build his premises andbusiness.Before the fire, Bob had been in the process of repairing the roof of Alf'spremises. Alf and Bob had agreed that Bob's 20,000 fee for the work would bepayable in full on completion of the work. By the time of the fire, Bob hadcompleted roughly half of the work and had incurred staff costs of 3,000 andexpenditure on materials of 4,000. Also, in the period leading up to the fire, Alf had been restoring a car for Chy. Chyhad recently bought the car at auction for 2,000. In return for Alf's work, Chy hadagreed to pay Alf 10,000 at the outset with the balance of 20,000 being due oncompletion. By the time of the fire, Alf had spent a total of 3,000 on parts for thevehicle and incurred staff costs of 5,000. On the morning after the fire, butbefore discovering what had happened, Alf agreed online to buy a re-conditionedengine for Chy's car from another dealer for a price of 8,000.The day before the fire, Alf had agreed to buy a car from Dan for 10,000 to bepaid in full on collection of the car from Dan's premises in two weeks' time.Discuss what rights and liabilities Alf has with respect to Bob, Chy and Dan