About how many cars did Mr. Black's class wash?

This is a bar graph of fourth grade car wash sales. The x-axis is the class. The y-axis is number sold. Smiths class bar reaches to forty. Jones bar reaches thirty. Blacks bar is between forty and fifty. Bonds bar is between thirty and forty. Vilas bar reaches fifty.

Select the correct answer.

Question 3 options:

45

40

50