How Did the United States and Japan Compromise Over the Issue

How did the United States and Japan compromise over the issue of Japanese immigration to this country?

A) Japan agreed to all restrictions on immigration to the United States in return for a greater colonial presence in China.
B) Japan accepted San Francisco's mandate to segregate all Asian students in one set of schools in exchange for more lenient immigration rights.
C) Both countries came to a Gentlemen's Agreement in which Japan conceded to deny passports to workers intending to immigrate to the United States.
D) Japan agreed to allow Russia access to Manchuria in return for allowing Japanese workers to immigrate to the United States.