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Question 21 (1 point) 21. (1 mark) Similar to part b in Lab 2, let f(x) = [[log, x]] (greatest integer of log, x) on [, 4]. What is the range of f(x)? a) {0,1,2} b) {-2,-1,0} c) {0,1} d) {-1,0,1,2} e) {-1,0,1} Oa Ob Oc Od Oe