Question: A professor needs help from 3 student helpers to complete 4 tasks. The first task is grading: the second is scanning the third is copying,

A professor needs help from 3 student helpers to

A professor needs help from 3 student helpers to complete 4 tasks. The first task is grading: the second is scanning the third is copying, and the fourth is organizing student portfolios. The estimated time for each student to do each task is given in the matrix below. Student A B 1 90 120 110 2 50 60 60 3 40 30 50 4 20 50 70 Which of the following constraints represents the assignment for task 2, scanning? Select one: A. XX2A +X2B + X2c 20 B.X2A +X2B+X20 = 0 C. X2A +X2B + X20 = 1 D. X2A +X2B + X2C s 1

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