Given the Data in Table 1A

Multiple Choice

Given the data in Table 1A.4.2,holding price constant,the graph of the purchases of strawberries,measured on the x-axis and family income,measured on the y-axis is a

A) vertical line.
B) horizontal line.
C) positively sloped line.
D) negatively sloped line.
E) positively or negatively sloped line,depending on the price that is held constant.