The tyre pressure of a car was found to be 150cmHg in the morning at a temperature of 27°C. Hard driving in the afternoon raised the temperature of the tyres by 57°C. The tyre pressure had by the afternoon was
A. increased by 15.0cm Hg B. decreased by 15.0cm Hg C. increased by 22.50cm D. decreased by 22.50cm Hg E. remained constant
