The former Chairman of Vanguard, Mr. Bogle is a voice for temperance and honesty and reasonableness in our financial lives that should be listened to. He feels that many so-called financial advisors are milking society and hold out to their clients hopes of unreasonable profits...because they (the "advisors") profit from the commissions. For this reason, Vanguard is known as one of the lowest cost mutual fund/financial companies. Mr. Bogle says about the market: "nobody knows nothing." What does he mean?
Options:
A. Financial markets are unpredictable
B. Financial advisors have all the knowledge
C. Investing is always profitable
D. Low-cost funds are unreliable