Which of the following mutual funds is likely to have the highest after-fee returns over the long run? Vanguard 500 index Investor Fund, which seeks to track the performance of the Standard 8 Poor's 500 index: Saturn Sustainable Equity Fund, which actively seeks capital appreciation. it invests at least 800 of its assets in stock of companies located throughout the world that the fund's advisor believes has sustainable characteristica Invesco Asia Pacific Growth Fund, which actively seeks long-teem growth of capital. The fund invests mainly in the stock of small companies in the AsiafPacific region. Wasatch Total Bond Fund, which imests in a diversified portfolio of corpocate and government bonds in developed markets around the globe