H Owes C $700

Multiple Choice

H owes C $700.00.By agreement between H and R,R promises to pay this debt in return for H's undertaking to convey a house to him.C now sues R on his promise.In this situation

A) there is no contract between H and C.
B) there is a contract between H and R.
C) privity of contract prevents C from succeeding.
D) there is no contract between R and C.
E) all of the above