Which of the Following Best Describes the TSA

Which of the following best describes the TSA?

A) This refers to the centers, offices and projects or the various intelligence agencies "managed" by the Director of National Intelligence. They work independently and collaboratively.
B) It is in charge of protecting the entire transportation system of the United States. Most believe it is simply involved with airline security but it has rail systems and ports as well.
C) Established in 2002, combining some 22 different federal agencies that had a role in providing security for the United States, it has now grown to be the third largest federal agency with some 240,000 employees.
D) Federal agency once known for being responsive absorbed by the Department of Homeland Security just prior to the disastrous response to Hurricane Katrina.