SSC CHSL 10 Jan 2017 Shift 2 Paper

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.
A rate of growing is different(A)/for different sectors, but the service sector(B)/ always grows faster than agriculture.(C)/No error(D)