Mandy offers to pay David $1,000 for David's computer, provided that Mandy receives that much from her aunt's estate, which is currently being probated. She expects to know for sure how much she will receive within a week or so. In this case:

Select one:

a.

the consideration of the promise of $1,000 is insufficient because it is subject to a condition.

b.

Mandy's conditional promise is sufficient consideration unless Mandy knows she cannot receive at least $1,000 from her aunt's estate.

c.

There is no consideration.

d.

this is an illusory contract, because Mandy doesn't know whether she will receive the money for sure.