When Pam increases her consumption of pizza from 1 slice to 2 slices, her utility increases from 50 to 150. When she increases her consumption from 2 slices to 3 slices, her utility increases from 150 to 200. When she increases her consumption from 3 slices to 4 slices, her utility increases from 200 to 225. Pam's marginal utility from increasing her consumption of pizza from 2 to 3 slices is ________. Group of answer choices 50 30 66.7 200