The phone bill for Denver, Inc. consists of both fixed and variable costs. The firm collected four months of data on its phone usage: Phone Use Total BIH January 460 minutes $3,000 February 200 minutes $2,675 March 170 minutes $2,660 April 310 minutes $2,825 Use the high-low method to determine the variable cost per minute for the phone bill. (Round your answer to the nearest cent.) O A. $0.85 per minute OB. $1.17 per minute OC.$0.11 per minute D-56.52 per minute