C-02-Q118mediumsingle_mcqFor S={(2,1),(2,2),(3,2),(4,5)}S = \{(2, 1), (2, 2), (3, 2), (4, 5)\}S={(2,1),(2,2),(3,2),(4,5)}, DomS=\operatorname{Dom} S =DomS=a{1,2,5}\{1, 2, 5\}{1,2,5}b{2,3,4}\{2, 3, 4\}{2,3,4}c{1,2,3,4}\{1, 2, 3, 4\}{1,2,3,4}d{2,3,4,5}\{2, 3, 4, 5\}{2,3,4,5}ব্যাখ্যাThe domain consists of the first elements of each pair: 2,2,3,42,2,3,42,2,3,4. Removing the repetition gives {2,3,4}\{2,3,4\}{2,3,4}.