A plastics manufacturing performed a quarterly time series analysis for demands over the last five years (periods 1 through 20) . The analysis resulted in the following trend equation and seasonal indexes: 
= 920.0 + 22.6 t
Based on the seasonal indexes, which quarter is expect to have 21% more demand than predicted by the trend line?
A) 1
B) 2
C) 3
D) 4
E) 1 and 3
Correct Answer:
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