In this task, you need to provide the correct option for a given problem from the provided options.
Q: Problem: the h . c . f and l . c . m of two numbers are 84 and 21 respectively . if the ratio of the two numbers is 1 : 4 , then the larger of the two numbers is
Options: a ) 32 , b ) 37 , c ) 84 , d ) 29 , e ) 21
A:
c