SGX-ST or the OCC shall be empowered to impose, from time to time in its discretion, such restrictions on Option transactions or the exercise of Options in 1 or more Series of Options of any Class dealt in on SGX-ST as SGX-ST or the OCC deems advisable in the interests of maintaining a fair and orderly market in Options, or in the underlying securities or otherwise deems advisable in the public interest or for the protection of investors. During the effectiveness of such restrictions, no Trading Member shall, for any account in which it has an interest or for the account of any customer effect any Option transaction or accept Exercise Notices to exercise any Option in contravention of such restrictions.