Select the correct answer.
A farmers' group conducted an experiment to determine which fertilizer is better for plant growth. One fertilizer contains a urea supplement, while the other does not contain the urea supplement. For the experiment, they randomly selected 20 plants of the same species growing in their area. The farmers tested the urea-enhanced fertilizer on 10 plants and the non-urea fertilizer on the other 10 plants.

After three months, they reported their findings as shown.

A bar graph showing the Plant growth report with months on the X-axis and the Number of plants with above-average growth on the Y-axis. The Blue bar is for with supplements and the green without supplements.

What can be concluded from the farmers' data?

A.
There is not enough information to draw any conclusions from the data.
B.
The fertilizer without the urea supplement is more effective than the fertilizer with it.
C.
Both types of fertilizer are equally effective.
D.
The fertilizer with the urea supplement is more effective than the fertilizer without it.