(b) Any person submitting such letter or other written communication may also submit therewith a request that it be accorded confidential treatment for a specified period of time, not exceeding 120 days from the date the response, together with a statement setting forth the considerations upon which the request for such treatment is based. If the staff determines that the request is reasonable and appropriate it will be granted and the letter or other communication will not be made available for public inspection or copying until the expiration of the specified period. If it appears to the staff that the request for confidential treatment should be denied, the staff shall so advise the person making the request and such person may withdraw the letter or other communication within 30 days thereafter. In such case, no response will be sent or given and the letter or other communication shall remain in the Commission's files but will not be made public. If such letter or other communication is not so withdrawn, it shall be deemed to be available for public inspection and copying together with any written response thereto. Note: All letters or other written communications requesting interpretative advice, a no-action position, or an exemption shall indicate prominently, in a separate caption at the beginning of the request, each section of the Act and each rule to which the request relates. If more than one section or rule is involved, a separate copy of the request shall be submitted for each section or rule involved and an additional copy for the use of the staff of the Commission.