问题 241 Which is true about the round,truncate and mod functions>?

A、 ROUND(MOD(25,3),-1) IS INVALID
B、 ROUND(MOD(25,3),-1) AND TRUNC(MOD(25,3),-1) ARE BOTH VALID AND GIVE THE SAME RESULT.
C、 ROUND(MOD(25,3),-1) AND TRUNC(MOD(25,3),-1) ARE BOTH VALID AND GIVE THE DIFFERENT RESULTS.
D、 TRUNC(MOD(25,3),-1) IS INVALI
D、