42. Calculate the labour turnover rate according to replacement method from the following: No. of workers on the payroll: - At the beginning of the month: 500 - At the end of the month: 600 During the month, 5 workers left, 20 workers were discharged and 75 workers were recruited. Of these, 10 workers were recruited in the vacancies of those leaving and while the rest were engaged for an expansion scheme. (a) 4.55% (b) 1.82% (C) 6% (d) 3%