Dr. Martens is a British footwear and clothing brand, which also makes a range of accessories -- shoe care products, clothing, luggage, etc. In addition to Dr. Martens, they are also commonly known as Doctor Martens, Doc Martens, or Docs. The footwear is distinguished by its air-cushioned sole (dubbed Bouncing Soles), upper shape, welted construction and yellow stitching. The boots have been the choice of footwear among various groups in British culture: in the 1960s skinheads started to wear them, ''Docs'' being the usual naming, and by the late 1980s, they were popular among scooter riders, punks, some new wave musicians, and members of other youth subcultures, most notably the grunge fashion scene in the early nineties.

Multi-choice problem: Is it true that are dr martens and doc martens the same?

Select from the following.
a). no;
b). yes;
The answer is:
b).