The rate equation for the reaction  $2\mathrm{A}+\mathrm{B}\to \mathrm{C}$  is found to be : rate = K[A][B]. The correct statement in relation to this reaction is

(1) Rate = K[A][B]

(2) Rate constant (k) depends only on temperature and catalyst.

(3)  2A + B → C

Rate formation of 'C' is half the rate of disappearance of 'A'

(4) 

for 2nd order

only option (2) is correct.