The Life Expectancy E, in Solar Lifetimes, of Certain Stars

Multiple Choice

The life expectancy E, in solar lifetimes, of certain stars depends on their mass M, in solar masses.The relationship is . As mass increases, life expectancy decreases.What can you say about the rate of decrease? A graph of E versus M can help you answer this question.
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A) Life expectancy decreases at a decreasing rate.
B) Life expectancy decreases at an increasing rate.
C) Life expectancy reaches a point of inflection.
D) None of the above.