When joining a road via an acceleration lane, where must you make sure you can carry out the manoeuvre safely?

When joining a road via an acceleration lane, where must you make sure you can carry out the manoeuvre safely?
A)The location does not matter.
B)At the end of the acceleration lane.
C)At the beginning of the acceleration lane.Correct
A driver intending to use the acceleration lane to join a motorway or dual carriageway, or any other road with an acceleration lane, must observe the traffic and make sure, at the beginning of that lane, that they can do so without danger to other drivers and road users travelling on the carriageway.