A rough year for Rite Aid (NYSE: RAD) investors just keeps getting harder. Shares of the drugstore operator tumbled 11.38%, after reports surfaced that Walgreens Boots Alliance (NASDAQ: WBA) is considering forcing the Federal Trade Commission to vote on its pending acquisition of Rite Aid. It’s a risky move, and the market’s reaction suggests that investors don’t think regulators would approve the deal if forced to deliver a verdict within 30 days.