The following graphs show the performance of two stocks over the first five months of the year.

Which graph appears to show the best performance?

Which scale makes the graph appear to be rising more slowly?

a. Stock XYZ shows the best performance. The scale of Stock ABC makes the graph appear to be rising more slowly.

b. Stock ABC shows the best performance. The scale of Stock ABC makes the graph appear to be rising more slowly.

c. Stock XYZ shows the best performance. The scale of Stock XYZ makes the graph appear to be rising more slowly.

d. Stock ABC shows the best performance. The scale of Stock XYZ makes the graph appear to be rising more slowly.