graphics/ technical writing-- Read Carefully

Express the (same) information  in TWO different kinds of graphics, such as a pie chart, bar chart, graph, etc. (Both graphics should be appropriate for the data set). AND, Write a one-paragraph explanation about which graphic is preferable for the particular data set (even though both are acceptable). Include in your discussion the concept of audience (perhaps one graphic is better suited for a particular audience than the other, etc.). Support your explanation. 

the data:

This year, our membership can be broken down as follows: 45 percent, electrical engineering;  20 percent, materials engineering; 15 percent, mechanical engineering; 10 percent, chemical engineering; and 10 percent, other.