Baltimore and its surrounding region are home to the headquarters of a number of major organizations and government agencies, including the NAACP, ABET, the National Federation of the Blind, the Centers for Medicare & Medicaid Services, and the Social Security Administration.

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How do you read "NAACP, ABET"?

1. N,A,A,C,P, A,B,E,T
2. N, double A,C,P, A,B,E,T
3. N,A,A,C,P, A,BET
4. nasp, A,bet

#s 1 and 2 are fine, but not the others.