Zero, inc. agreed to build millie a storage building for $8,000. after beginning the project, zero realized that it could not complete the job and make a profit. zero demanded $9,500 to complete the building. millie agreed to pay the $9,500. when the project was complete, millie tendered $8,000 to zero for the job. if zero sues millie for the remaining $1,500:
a. zero will win because there was consideration for the additional $1,500.
b. zero will win because millie had a pre-existing duty to pay any additional amounts.
c. zero will lose because there was no legal consideration to support the additional $1,500.
d. zero will lose because the ucc does not require consideration to modify an existing contract.