2t (c)3tt (a) 470 let f:r>r be a differentiable function with f(0) = 0. if for all x e r, 1< f(x) < 2, then which one of the following statements is true on (0,

2T (C)3TT (a) 470 Let f:R>R be a differentiable function with f(0) = 0. If for all x e R, 1< f(x) < 2, then which one of the following statements is true on (0, o)? (a)f is unbounded (c) f has atleast one zero (b) fis increasing and bounded (d) f is periodic