Question

If x>y>1, which of the following must be true?

(i) ln x > ln y

(ii) e^x > e^y

(iii) y^x > x^y

(iv) cos x > cos y

 

      (a) (i) and (ii)                                                      (b) (i) and (iii)

      (c) (iii) and (iv)                                                   (d) (ii) and (iv)