A new device Sniffer $,$ used for testing alcohol levels in drunken driving suspects, is priced out of the reach of most law enforcement units. Those units that have bought the Sniffer are extremely pleased with its results and the fact that these results are readily accepted in court. There is nothing on the market today that has the accuracy and the portability of the Sniffer. The manufacturer of the Sniffer is likely to be using a$($n$)\_\_\_\_\_$ pricing policy.

Group of answer choices

a$.$ penetration

b$.$ odd$-$even

c$.$ skimming

d$.$ going$-$rate