The Society for Human Resource Management (SHRM) and the American National Standards Institute (ANSI) partnered to develop a universally accepted calculation for cost per hire (CPH). Which of the following is the correct formula for the cost-per-hire calculation, where EC = external costs; IC = internal costs; and THP = total number of hires for the time period being evaluated? Question 6 options: a) CPH = (EC - IC) / THP b) CPH = THP - (EC + IC) c) CPH = (EC + IC) / THP d) CPH = THP / (EC + IC)