Question $22(2$ points$)$

Billy Ray contracts to sell his corn crop to Farmers Elevator at the end of the summer, when he harvested the grain. The written contract states that Farmers will pay Billy Ray $$2\mathrm{.}20$ per bushel of corn for each bushel delivered on or before November $1.$ Just before harvest in September, a tornado rips through Billy Ray's farm and destroys all of his growing crops, including the corn. Farmers insists on Billy Ray delivering the corn. To avoid contract liability, Billy Ray's best defense is:

$$ commercial impracticability

the battle of forms

the mirror image rule

the merchant's exception