Which of the Following Is a Good Example of the Low-Ball

Which of the following is a good example of the low-ball technique?

A) A car salesman offers to sell you a car for a cheap price, but after reading the fine print, you see that there are many hidden fees and charges.
B) A prospective buyer offers a low price for your house, hoping that you will reach a favourable compromise price.
C) A door-to-door salesman asks you for a glass of water before proceeding with his sales pitch.
D) An antiques dealer offers you a very low price for your grandfather's watch, expecting that you will take the best offer given, regardless of its value.