served on active duty in support of a contingency operation for 90 consecutive days or more; or

in the case of a member of the Army National Guard of the United States or Air National Guard of the United States, performed full time National Guard duty under section 502(f) of title 32 for 90 consecutive days or more when authorized by the President or Secretary of Defense for the purpose of responding to a national emergency declared by the President and supported by Federal funds.

Each member who becomes entitled to educational assistance under subsection (a) shall be given a statement in writing prior to release from active service that summarizes the provisions of this chapter and stating clearly and prominently the substance of section 16165 of this title as such section may apply to the member.

At the request of the Secretary of Veterans Affairs, the Secretary concerned shall transmit a notice of entitlement for each such member to that Secretary.

Except as provided in paragraph (2), an individual entitled to educational assistance under this chapter who is also eligible for educational assistance under chapter 1606 of this title, chapter 30, 31, 32, 33, or 35 of title 38, or under the Hostage Relief Act of 1980 (Public Law 96–449; 5 U.S.C. 5561 note) may not receive assistance under more than one such program and shall elect (in such form and manner as the Secretary of Veterans Affairs may prescribe) under which program the member elects to receive educational assistance.

The restriction on duplication of educational assistance under paragraph (1) does not apply to the entitlement of educational assistance under section 16131(i) of this title.