Fact Pattern 10-5 Brick and Carmen Are in an Auto

Multiple Choice

Fact Pattern 10-5 Brick and Carmen are in an auto accident. Brick offers Carmen $2,000 if she promises not to pursue her potential legal claim against Brick. Carmen agrees. Later, Carmen discovers that it will cost $1,500 to repair her car and $4,000 to cover the medical expenses for a latent injury.
Refer to Fact Pattern 10-5. The agreement between Brick and Carmen is

A) past consideration.
B) an illusory promise.
C) a release.
D) promissory estoppel.