What was the top speed reached by HMS Ardent during her sea trials?

A. 33.5 knots (62 km/h; 38.5 mph)
B. 35.9 knots (66.5 km/h; 41.3 mph)
C. 37.5 knots (69.5 km/h; 43.2 mph)
D. 39.9 knots (73.9 km/h; 45.9 mph)
Answer: 