Select the equation that can be used to find the difference between the data table ranges.
Left Data Table: A data table titled Coquina. The two headings are Weight and Number of Samples. The weights are 1, 2.25, and 3.5. Beside 1 is the number 1. Beside 2.25 is the number 2. Beside 3.5 is the number 2. Right Data Table: A data table titled Sandstone. The two headings are Weight and Number of Samples. The weights are 1.5, 2.5, and 3.5. Beside 1.5 is the number 2. Beside 2.5 is the number 1. Beside 3 is the number 4.
a 2 − 2 = 0
b 2.5 − 1.5 = 1
c 3.5 − 1.5 = 2
d 3.5 − 3 = 0.5