I had a 64 year old who wanted to get his C+E only because it was the only category he did not have but he was so nervous that he was unsafe to drive within 1 hour of the test and he never got out of the test centre because the examiner had to stop him going any further - on 3 tests!
He was physically shaking and his brain … well … he could not add up 2 + 2 it was that fried with nerves
He never did get his C+E