Gram is much smaller than kilogram, and a kilogram is much too big to fit in a pen cap! Your answer is grams.
Answer:
mods are too picky for this world
Explanation:
it's the "Hey there! We're all about making friends, but please keep use of our question feature to school-related questions only. So follow the rules, ask solid questions and, of course, have fun! But remember to always stick to our Community Guidelines when you do!" for me
I need a more detailed explanation to help you.