Suppose you are doing a portfolio analysis that includes all of the stocks on the NYSE Using a single-index model rather than the Markowitz model Multiple Choice O Increases the number of Inputs needed from about 1,400 to more than 1.4 million. Increases the number of Inputs needed from about 10,000 to more than 125,000 reduces the number of Inputs needed from more than 125,000 to about 10,000. reduces the number of Inputs needed from more than 5 million to about 10,000. Increases the number of Inputs needed from about 150 to more than 1,500