Which of the Following Is False About the Use of Incentives

Which of the following is false about the use of incentives (e.g., rebates, coupons) to encourage environmentally responsible behavior?

A) Extrinsic reinforcers like these are effective at creating long-lasting behavior change.
B) Use of these types of extrinsic rewards has declined compared to their popularity in the 1970s.
C) Extrinsic rewards like these are difficult and costly to implement.
D) New behaviors established through the use of extrinsic reinforcers like these are easily extinguished.