Question: ARIMA is usually described as ARIMA(a, d, m), where a is the parameter of autoregressive (AR), m is the parameter of moving average (MA), and

ARIMA is usually described as ARIMA(a, d, m), where a is the parameter of autoregressive (AR), m is the parameter of moving average (MA), and d is the parameter of the integrated term. Given this information, which model is an autoregressive model

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