Which of the Following Correctly States Concerns About Stationarity for the Following

Multiple Choice

Which of the following correctly states concerns about stationarity for the following model:
Y_t = $\gamma$ Y_t-1 + $\beta$ ₀ + $\beta$ ₁X_t + $\varepsilon$ _t

A) If $\gamma$$\lt$ 1, the model is stationary and spurious regression results are likely.
B) If $\gamma$ =1, the model will "blow up" as Y will get larger and larger in every period.
C) If $\gamma$$\gt$ 1, the model will "blow up" as Y will get larger and larger in every period.
D) If $\gamma$ =1, the model is stationary and spurious regression results are likely.