A pharmaceutical company has different production lines for the pills it produces. A production line creates and processes pills, and the weights of individual pills are recorded. The mean and standard deviation weight of the pills produced by each line are provided. Production Line Mean (mg) Standard Deviation (mg)

Line M Mean - 100 Standard deviation - 1.0

Line N Mean - 400 Standard deviation - 0.5

Line O Mean - 250 Standard deviation - 0.2

Line P Mean - 125 Standard deviation -0.6

Which line produces products whose weights are closest to their mean?

A) Line O

B) Line M

C) Line N

D) Line P