Maria has a collection of rare stamps she wants to sell. She tells her parish priest about her intention. He offers to buy the stamps from her so they can be sold at a coming church market to help the church's missionary work. He offers a price which is about half their true value but Maria does not know this and sells to him. The stamps are actually for his

private collection. The sale contract would probably be:

A. voidable for undue influence

O B. voidable for unconscionability

O C. voidable for duress

O D. enforceable