For What Reason Did the Tokugawa Shoguns Expel All Foreign

For what reason did the Tokugawa shoguns expel all foreign traders except for the Dutch?

A) The Japanese did not have the capacity to collect taxes from dispersed trading companies.
B) The Japanese feared that British technology would destabilize Japan.
C) The Dutch did not proselytize.
D) The Dutch would not undercut the Japanese economy by importing silver.