Question: The statement that stock prices follow a random walk implies that: I the correlation coefficient between successive price changes ( auto correlation ) is not

The statement that stock prices follow a random walk implies that:
I the correlation coefficient between successive price changes (auto correlation) is not significantly different from zero
Il successive price changes are positively related
IlI successive price changes are negatively related
IV the auto correlation coefficient is positive
A. IV only
B. Il and III only
C. I only
D. Il only
E. Il and IV only

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