Answer :
set to the same denominator to compare:
C: 1/6 for 4/6;
1/4 or .25% of the serving
D: 4/12 for 9/12
4/9 or .44% of the serving
.25<.44
ingredient C is lower
C: 1/6 for 4/6;
1/4 or .25% of the serving
D: 4/12 for 9/12
4/9 or .44% of the serving
.25<.44
ingredient C is lower