You're at your local grocery store. They're raising money for the local food cupboard. Your cashier asks you if you would like to add five dollars to your bill to donate. You decline. She gives you your total of $$38\mathrm{.}56,$ Then ask if you would like to round up to donate. $($You pay $$39$ and the $$\mathrm{.}44$ difference is donated.$)$ You say sure. What compliance technique is being employed?