Here are two companies- X and Y. Company X is with an average demand of 6,000 per period and forecast error average around 150 per period. Company Y is with average demand of 5,000 per period and forecast error average is also around 150 per period. Which of below statement is correct?

a) Company X does better forecasting job than company Y

b) Company Y does equal forecasting job with company X

c) Company Y does better forecasting job than company X

d) None of above is correct