About Shark's teeth: give way, not a stop requirement: which statement is correct?

At a junction without shark's teeth or priority signs, the driver on the wider or busier road has priority.
Sign B6 and sign B7 mean exactly the same thing: both 'give way'.
Shark's teeth require a full stop, just like sign B7.
✓ Shark's teeth are themselves a traffic sign and are binding, even without a sign next to them.

Correct answer: Shark's teeth are themselves a traffic sign and are binding, even without a sign next to them.

Explanation

Shark's teeth are themselves a traffic sign and are binding, even without a sign next to them. The legal duty is directly in the marking

Without shark's teeth or priority signs the main rule applies at junctions: priority to drivers from the right. The width or busyness of the road does not regulate priority
B6 means 'give way', just like shark's teeth. B7 adds an explicit stop requirement on top: 'stop; give way'. B7 is therefore stricter than B6
Shark's teeth mean: give way, not a stop requirement. A full stop is only mandatory where sign B7 explicitly requires it, at the stop line