Question $4(25$ points$)$

The following conversation took place between Gary, the owner of Lawns $4$ Life, and Jason, a customer.

CUSTOMER: Can you recommend a good lawn mower?

GARY: I$\text{'}$m fond of the Crusher $2000,$ myself.

CUSTOMER: Actually, I$\text{'}$m hoping to find a mower that can mulch up leaves and twigs from my lawn, for use in my garden. The Crusher $2000$ won't do that, will it$?$

GARY: The Mark XIII can do that.

CUSTOMER: That one's laser$-$guided, though, isn't it$,$ and very expensive?

GARY: True. Well, there's always the Matador $711.$ Costs only $$400.$

CUSTOMER: Great. I'Il buy it$.$

Jason bought the mower, took it home, and used it for three months without difficulty. However, in August, a hurricane hit and Jason's lawn was strewn with twigs and sticks of various sizes. When Jason mowed over a patch of lawn rather densely covered with twigs and sticks, the Matador $711$ choked, bucked, and jerked backwards into Gary, injuring him. Gary wants to sue Lawns $4$ Life. Have any warranties been breached?