TransWave International Is a Company That Markets Patented Electronic Sensors

TransWave International is a company that markets patented electronic sensors as an early warning device for locating potential problems with buried pipelines. TransWave sends an environmental expert, a safety engineer, a legal representative to explain new regulations enacted by the Canadian Office of Pipeline Safety, and an experienced
Pipeline expert when it meets with a prospect. This is an example of how TransWave uses:

A) order getting.
B) sales engineering.
C) need-satisfaction selling.
D) team selling.