Answer:
A) implies that security analysis is unable to predict future market behavior.
Explanation:
The random walk hypothesis -
It is a financial theory , which states that the prices in the stock market change randomly , i.e. , change in an uneven manner , and thereby can be predicted .
The concept was given by Jules Regnault , and then by the Louis Bachelier .
Hence , from the options given in the question , the correct statement for the random walk hypothesis , is options ( A ) .