Create a function called displayStocks() which receives the name of the file to open. • It will create an input file object, • open the file for input, • read the file, • Display the stock name, the number of shares, the purchase price and the current value • Create a function called totalValue() which will: • calculate and display the profit or loss on each stock, • and display the total value. • Create a function called displayMenu() which will display the menu. • Note the formatting! Don’t forget to close the file!