Which code determines the int value foo closest to a double value bar?()  
A、A. Int foo = (int) Math.max(bar);
B、B. Int foo = (int) Math.min(bar);
C、C. Int foo = (int) Math.abs(bar);
D、D. Int foo = (int) Math.ceil(bar);
E、E. Int foo = (int) Math.floor(bar);
F、F. Int foo = (int) Math.round(bar);