Please provide answers for this question. I am checking them against Symbolab and WolframAlpha's final answers to see which site simplifies them the best, so no need to break it down (just provide the letter answer).

Find the intervals on which the function f (a) = 7x-1 13-4c is continuous. Select one: O a. (-oo, } ) U (4, -00) O b. (-00 , - 2) U ( - 2, 2) U (2, 00 ) O c. (-00, -2) U (-2, 0) U (0, 2) U (2, 00 ) O d. (-0o, 0) U (0, 0o) O e. (-00 , 7 ) U ( 7 , 00 )