Which of the Following Is Not True About Tender Offers

Which of the following is not true about tender offers?

A) The offer must remain open at least twenty business days from the commencement of the offer.
B) The SEC must be notified of the terms of a tender offer at least ten days before it is made.
C) If the offeror increases the tender price, the higher price must be paid, even to those who already accepted the offer at the earlier lower price.
D) Any increase in the price offered or the maximum number of shares that the offeror will accept requires that the effective time of the offer be extended at least ten days.
E) The "pro rata" rule holds that the shares must be purchased on a pro rata basis if too many shares are tendered.