10. Choose the correct statement: (a) If lirnx-. then lirnx-.uf(x) t (b) If limr_.u f (x)2 exists, then limr_.u f(r) exists (c) If + g(x)) exists, then both limr-.u f (x) and limx-.u g(x) exist. (d) If limr_.u exists, then at least one of limr_.u f(x) or g(x) must exist. (e) none of the above is true 11. (c) -11 (e) none Of these