When riding your motorcycle you must always wear an approved helmet...

When riding your motorcycle you must always wear an approved helmet...
A)Properly fastened only when riding within a built-up area.
B)Properly fastened both inside and outside built-up areas.Correct
C)It is not necessary to wear the helmet fastened.
When riding a motorcycle or moped we must, in all cases, wear an approved helmet which must always be properly fastened.
The helmet must fit well on the head, must not be tilted backwards or forwards over the eyes and the safety strap must be fastened.
The safest helmet is the full-face one which covers the entire face.