A student graphs mass versus amount for three elemental solids labeled A, B, and C, obtaining slopes of 26.9 g mol−1, 65.4 g mol−1, and 118.7 g mol−1, respectively. The possible identities are Al, Zn, and Sn. Which assignment of elements to lines is most consistent with the data?
a) A=Al,B=Sn,C=Zn
b) A=Al,B=Zn,C=Sn
c) A=Sn,B=Zn,C=Al
d) A=Zn,B=Al,C=Sn