For the following cases explain whether the airline is liable under Montreal Convention:

a) John cabin baggage is 5 kg above the limit stipulated by the carrier. While he was putting his baggage to the overhead compartment, he slipped and injured his bag. (3 marks)

b) While John was boarding the aircraft using stairs, he was pushed by another passenger. He fell from the stairs and was injured. As a result, he was hospitalized and missed his prepaid non-refundable tour. (3 marks)