Question: For an ARMA ( 1 , 2 ) solution to a forecasting problem, the autocorrelation plot should have _ _ _ _ _ _ _

For an ARMA(1,2) solution to a forecasting problem, the autocorrelation plot should have _______ spike(s) and the partial autocorrelation plot should have _______ spike(s)?
Multiple Choice
1; 2
2; 2
1; 1
None of the options are correct.
2; 1

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