Final answer:
The SmartPhone Inc. stock performed better than the NASDAQ Composite Index between 2015 and 2017.
Step-by-step explanation:
The question asks about comparing the returns of SmartPhone Inc. stock with the NASDAQ Composite Index of growth companies. By analyzing the given information, we can deduce that option E is the correct answer: The SmartPhone Inc. stock performed better than the NASDAQ Composite Index between 2015 and 2017.
To determine this, we observe the dashed line representing the returns of SmartPhone Inc. stock and compare it to the solid line representing the returns of the NASDAQ Composite Index. From 2015 to 2017, the dashed line is consistently above the solid line, indicating that the SmartPhone Inc. stock outperformed the NASDAQ Composite Index during this period.
It's important to note that the analysis is limited to the specific time frame mentioned and does not provide information on the performance of the stocks outside of this period.