Choice A is the correct answer. Analyze the behavior as $x \to \infty$.

1. Base: $b = 1.2 > 1$ means exponential growth.
2. Behavior: As $x$ increases, $(1.2)^x$ grows larger and larger.
3. Conclusion: $y = 50(1.2)^x$ increases without bound.

💡 Strategic Tip: For exponential growth ($b > 1$), the function grows indefinitely as $x$ increases.

Choice B is incorrect because this describes decay ($b < 1$), not growth. Choice C is incorrect because 50 is the initial value, not a limiting value. Choice D is incorrect because$y$ is not constant; it grows exponentially.