What 100 is the T in DC at which WB?

The "T" in DC refers to the "T" in "Washington, D.C." (District of Columbia), and the "WB" stands for "White House Briefing." The 100 is the address for the White House, which is located at 1600 Pennsylvania Avenue NW, Washington, D.C. The "T" could also refer to various governmental terms or locations associated with the capital. If you meant something specific by "T" or "WB," please clarify!