Respuesta :
A would be the best information because you have distinct y and x values. Money and different classes.
A would be the best answer.
Letter B and D could also be read on a bar graph, however not so intuitively. They both are interested in differences - data that could be obtained by taking subtracting the values of one column from another. While bar graphs should be used to show measurable pure values (amounts).
Letter C graph would be best shown in other types of graphs, more ideal for percentages. Like a pizza graph, for example.