Use IRAC and Advise Lallu if he can sue Fatty for the damages and claim $100 based on the breach ?

A1 Car Wash is a new car wash in Makoi, Nasinu. Fatty and Lallu enter into a written agreement whereby Fatty agrees to wash and polish Lallu's BWM sports car for Fiji $100. Lallu pays Fatty $100 and then asks Fatty whether he will use the new \"Hybrid\" brand of car wash and polish when washing and polishing Lallu's car. Fatty says to Lallu that he will use the new \"Hybrid\" brand. The written agreement makes no mention of the brand of car wash and polish to be used. Fatty uses the new \"Hybrid\" brand but eventually ran out of it and uses the \"MultiPurpose\" brand (a locally manufactured brand), which is not of the same quality as the new \"Hybrid\". After one week, the paint of his car started to fade and peel off. Lallu nds out and decides to sue Fatty for the damage to his car and $100 because Fatty breached the agreement to use the new \"Hybrid\" brand of car wash and polish. Advise Lallu if he can sue Fatty for the damages and claim $100 based on the breach