[Scheming 'Friends'] Richard Wants to Rent a Basement Apartment in Eric's

[Scheming 'Friends'] Richard wants to rent a basement apartment in Eric's home. Richard threatens to tell Eric's parents that Eric had been arrested for illegally smoking marijuana unless Eric rents the apartment to him for $100 per month. (The information regarding the arrest is true.) Eric reluctantly agrees to rent the apartment to Richard for $100 per month. Richard also wants to buy Eric's car. Eric runs back the odometer on the car before Richard looks at it. Richard is impressed by the low mileage and agrees to buy the car. Eric offers to sell Richard a ring for Richard's fiancée. Eric tells Richard that the ring is a diamond and believes that to be true. After the deal is made, however, a jeweler friend of Eric informs him that the ring is a fake. When Richard shows up with the money, Eric says nothing. He just hands Richard the ring and takes the money. Later, Richard finds out that the odometer was run backwards from another friend in whom Eric confided. Richard also finds out from his girlfriend that the ring is a fake.
-Which of the following is Richard guilty of in threatening to tell Eric's parents about the arrest unless Eric rents the apartment?

A) Duress
B) Unconscionability
C) Fraud
D) Undue influence
E) Consumer misbehavior