Josh Teaches Sixth Grade Math

Josh teaches sixth grade math.He created a table showing marks that his students scored on an assessment-the last column on the right displays this information.He now wants to add another column to the right showing percentage of marks that each students scored.What should he do after selecting the current last column on the right?

A) Right click on it and select Insert from the drop-down menu.
B) Right click on it,select Format Cells from the drop-down menu and select Add New Column.
C) Click on it,then click the arrow next to Insert in the drop-down menu.
D) Double click on it,select Format cells from the drop-down menu and click on Insert.