The Vanguard $500$ Index Fund tracks the performance of the S&P $500.$ To do so$,$ the fund buys shares in each S&P $500$ company

Multiple Choice

in proportion to the market value weight of the firm's equity in the S&P $500$

in proportion to the price weight of the stock in the S&P $500$

by purchasing an equal number of shares of each stock in the S&P $500$

by purchasing an equal dollar amount of shares of each stock in the S&P $500$