Linear Regression Was Used to Describe the Trend in World

Linear regression was used to describe the trend in world population over time. Below is a plot of the residuals versus predicted values.What does the plot of residuals
Suggest?

A) An outlier is present in the data set.
B) The linearity condition is not satisfied.
C) A high leverage point is present in the data set.
D) The data are not normal.
E) The equal spread condition is not satisfied.