For the purposes of this Rule:
(a) a security is deemed to be carried in a customer's cash account or a Trading Member's own account (such account being an account carried on the books of the Trading Member) on the contract date specified in the contract note in respect of the transaction in that security or on the exercise date specified in the exercise notice in respect of an option in that security that has been exercised;
(b) "security" does not include any security issued by the Singapore government or any public authority in Singapore;
(c) in calculating exposure to any particular security, all outstanding options exercisable into that security shall be included in such computation;
(d) in calculating exposure in any particular security under Rule 3.8.5(b) and Rule 3.8.5(d), all futures contacts with that security as an underlying shall be included in such computation.