What did Louis Kahn mean when he was referring to space as "served" or "servant"?

Group of answer choices

Served spaces were served by the architectural concept of the project, whereas servant spaces, being of lesser importance, were not afforded this same consideration

Served spaces were served by public plaza access, servant spaces were relegated to a secondary access

Served spaces were for the use of scientists and executives, whereas servant spaces were for support staff only.

Served spaces were for primary uses such as living, work, dining ans socializing. Servant spaces were related to the function and support of the building.