7. At Southwest, "employees can take advantage of a discounted stock purchase program. This has produced several millionaires." In particular, in the early 1990s, Southwest's ESPP consisted of: (1) one month offer periods (2) one month purchase periods (3) no lookback provisions (4) a 10% discount off the market price at the end of the purchase period. Southwest's stock price was rising sharply during this period. If Southwest had instead used longer offering periods and a lookback provision, what would happen to the average discount at which employees could purchase Southwest stock? Why