I the Irregular Component of a Time Series Is the Easiest

Multiple Choice

i. The irregular component of a time series is the easiest to measure. ii. The ratio-to-moving average method removes the time series trend component, resulting in 12 numbers that are called specific seasonals.
iii. For a quarterly time series, the initial step, using the ratio-to-moving average method, is to remove the seasonal components from the time series using a 3-month centered moving average.

A) (i) , (ii) , and (iii) are all correct statements.
B) (i) and (ii) are incorrect statements but (iii) is correct.
C) (i) and (iii) are correct statements but not (ii) .
D) (ii) and (iii) are correct statements but not (i) .
E) (i) , (ii) , and (iii) are all false statements.