25B [Definition of fundamental breach: substantial deprivation of expectation, etc.];

39A [Requirement to notify seller of lack of conformity: buyer must notify seller within reasonable time];

49A1 [Buyer's right to avoid contract (grounds for avoidance): fundamental breach of contract];

74A [General rules for measuring damages: loss suffered as consequence of breach];

77A [Obligation to take reasonable steps to mitigate damages]