Recently some Japanese have been trying to make conflicts with China, ________ effects we are greatly concerned.

A. to whose????????????? ????????????? B. about whose ????????????? ?? C. to which????????????? ????????????? D. about which

Recently some Japanese have been trying to make conflicts with China, ______ effects we are greatly concerned．

A．to whose                              B．about whose

C．to which                               D．about which

 Recently some Japanese have been trying to make conflicts with China,       effects we are greatly concerned.

    A. to whose          B. about whose          C. to which                  D. about which