Jack and Jill both love hot coffee. Jack likes to keep his coffee hot during the day while Jill doesn't mind drinking room temperature coffee. Jack is willing to spend more money on a thermos than Jill is willing to spend. This example illustrates the following major limitation of employing the Economic Value Creation framework because:________

a. accounting data focus mainly on tangible assets, which are no longer the most important.
b. accounting data are historical and thus backward-looking.
c. determining the value of a good service through the perspective of a consumers is not a simple task because consumers have different spending habits
d. overall macroeconomic factors such as the unemployment rate, and interest and exchange rates all have a direct bearing on stock prices