If markets are perfectly efficient, which of the following are true $($select all that apply$).$

All known information about a stock is already incorporated into the stock price.

Mutual funds that charge a higher fee but actively trade stocks to capitalize on mispricing are worth' the higher fees due to higher returns.

Investors should seek to buy mispriced stocks to capture excess returns.

When investing in stocks, you should look for firms with recent strong performance, market power, and top$-$tier management.

Investors should invest in funds that closely replicate the market.