inches, grams, ounces inches, pounds, ounces centimeters, grams, milliliters centimeters, pounds, milliliters
I gave my students this multiple choice question: Which of these groups contains only metric measurements?

Only one answer is correct among these 4 choices:
- inches, grams, ounces
- inches, pounds, ounces
- centimeters, grams, milliliters
- centimeters, pounds, milliliters

Could you tell me which one is correct?

centimeters, grams, milliliters