C-01-Q152mediumsingle_mcqS={(1,5),(2,10),(3,15),(4,20)}S = \{(1, 5), (2, 10), (3, 15), (4, 20)\}S={(1,5),(2,10),(3,15),(4,20)} হলে SSS এর রেঞ্জ —a{1,2,3,4}\{1, 2, 3, 4\}{1,2,3,4}b{5,10,15,20}\{5, 10, 15, 20\}{5,10,15,20}c{1,5,10,15}\{1, 5, 10, 15\}{1,5,10,15}d{4,20}\{4, 20\}{4,20}