Lucero has two identical normal distributions, but new data has just arrived, and now she is going to have to add 6 values to one of the two distributions: 3 values that are greater than any previously plotted value, and 3 values that are less than any previously plotted value. How will the newly changed data set compare to the unchanged data set.

A. It will have more spread.

B. It will have less spread.

C. The center will move left.

D. The center will move right.