The box-and-whisker plots below show the monthly rental rates for two different apartments over the past several years.

If Theo wants to sign a one-year lease for the less expensive apartment, which apartment should he choose?

A. He should lease apartment 1 for six months and apartment 2 for six months.
B. He should lease apartment 1.
C. He should lease apartment 2.
D. He should lease either apartment because they are equally expensive.