Choice A is the correct answer. Compare growth factors over the long term.

1. Investment P: $P(t) = 1000(1.10)^t$.
2. Investment Q: $Q(t) = 800(1.15)^t$.
3. Long-term: $1.15 > 1.10$, so Q's base is larger.
4. Conclusion: As $t \to \infty$, the larger base dominates, so Q eventually exceeds P.

💡 Strategic Tip: In exponential growth, larger base always wins in the long run.

Choice B is incorrect because despite higher initial value, lower growth rate loses. Choice C is incorrect because different bases mean they diverge. Choice D is incorrect because we can determine this from the growth rates.