Question 1 (1 point) Which of the following are all the critical numbers of f(x) = V(1 -x2) O a) o O b) - 5 , 5 O c) 5 , 0 O d) - 1, 0, 1 O e) None of the above Question 2 (1 point) Iff (x) = x3 (x2 - 14 ), then fis decreasing on which one of the following intervals? O a) (-0o, - V2 ) U (V2, 00 ) O b) ( - 0o, 0) U ( 12, 00 ) O c) ( - VZ, 0 ) U ( 0 , V2 ) O d) (- V2, 0) O e) ( v2, 0)