[单选题]
Four students measure the mass of an object,lcx+, ; 1qkqfmk: xmd3 e gax1h(f8k:;iw3s qelq :lgs b5z0,nex4.ap pach using a different scale. Theyeg4n:as.8p1epzl0 3l a :xqi,kw (qg; x hsfb5 record their results as follows:
Which student used the most precise scale?
