Given the task definition and input, reply with output. In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D". 

[header] How to calculate range [title] List the elements of your data set. [step] To find the range of a set, you'll need to list all of the elements of the set so that you can identify the highest and lowest numbers. Write down all of the elements. <sep> (A) [substeps] Use column c and column p to count all of the elements in your set. Do not include the missing elements because it may create a larger range than you originally imagined. (B) [substeps] You can feel free to add and subtract these elements to find the range of the data set. However, you don't have to include all of the elements when calculating your range. (C) [substeps] For example, the range of the base number will be the number of kilograms of barium contained in 1 kilogram (roughly 3.3 kilograms squared = 78.4119 g) of weight. [title] Multiply the numerator and denominator by multiplying the numbers. (D) The numbers in this set are : 20 , 24 , 25 , 19 , 24 , 28 and 14. [substeps] It can be easier to identify the highest and lowest number in the set if you list the numbers in ascending order.

D