The rate of decomposition of ammonia is found to depend upon the concentration of ammonia as :
`- (d[NH_(3)])/(dt) = (k_(1) [NH_(3)])/(1 + k_(2) [NH_(3)])`
which of the following statement is correct ?

Options

A. The reaction is zero order at very low as well as very high `NH_(3)` concentration
B. The reaction is first order at very low as well as very high `NH_(3)` concentration .
C. The reaction is zero order at very low concentration of `NH_(3)` and is of first order at very high concentration of `NH_(3)` .
D. The reaction is first order at very low `NH_(3)` concentration and is of zero order at very high `NH_(3)` concentration .

Answer

D