When making a U-turn, what must you take into account?

When making a U-turn, what must you take into account?
A)That there must always be a designated area on the road to perform the manoeuvre.
B)That you must leave a distance of more than 100 metres from the vehicle ahead.
C)That you must not endanger or obstruct other road users.Correct
To carry out a U-turn manoeuvre, we must choose a suitable location so that we block the road for as little time as possible, without using reverse gear, giving sufficient advance warning, and without endangering or obstructing other road users. Otherwise, we must refrain from performing the manoeuvre.