April hires Christine to landscape her yard. They agree on a price, agree on the types and colors of the plantings, and agree on the start date. When Christine shows up on the agreed date, April refuses to allow her to begin work. Christine sues April for breach of contract. At trial, April produces the contract, which states that the plants were to be a mixture of red, white, and blue and were to be between 12 inches and 18 inches in height. She then produces pictures to show that Christine had arrived with only purple and yellow plants that were 6 to 8 inches high. This type of evidence produced by April would be called:

a. inculpatory evidence.
b. summary evidence.
c. exculpatory evidence.
d. direct evidence.