The body and the mind are closely interwoven in ail of us, and certainly in Johnson's case the influence of the body was extremely oblivious. His melancholy, his constantly repeated conviction of the general unhappiness of human life, was certainly the result of his constitutional infirmities. On the other hand, his courage, and his entire indifference to pain, was partly due to his great bodily strength. Perhaps the vein of rudeness, almost of fierceness, which sometimes showed itself in his conversation, was the natural temper of an invalid and suffering giant. That at any rate is what he was. He was the victim from childhood of a disease that resembled St. Vitus's dance. He never knew the natural joy of a free and vigorous use of his limbs; when he walked it was like the struggling walk of one in irons. All accounts agree that his strange gestures and contortions were painful for his friends to witness and attracted crows of starters in the streets.
But Reynolds says that he could sit still for his portrait to be taken, and that when his mind was engaged by a conversation the convulsions ceased. In any ease, it is certain that neither this perpetual misery, nor his constant fear of losing his reason, nor his many grave attacks of illness, ever induced him to surrender the privileges that belonged to his physical strength~. He justly thought no character so disagreeable as that of a chronic invalid, and was determined not to be one himself. He had known what it was to live on four pence a day and scorned the life of sofa cushions and tea into which well-attended old gentlemen so easily slip.
Visitors to St. Paul Cathedral are surprised when they look at Johnson's statue because ______.

A. they do not expect it to be there
B. it was dressed in Roman costume
C. it was situated in the dome
D. it was dressed in eighteenth-century costume