Adam owned Blackacre. Adam entered into a written three-year lease of Blackacre with Bertha. Among other provisions, the lease prohibited Bertha from "assigning this lease, in whole or in part, and from subletting Blackacre, in whole or in part." In addition to a house, a barn, and a one-car garage, Blackacre's 30 acres included several fields where first Adam, and now Bertha, grazed sheep. During the following months, Bertha: I. By a written agreement allowed her neighbor Charles exclusive use of the garage for storage, under lock and key, of his antique Packard automobile for two years, charging him $240. II. Told her neighbor Doris that Doris could use the fields to practice her golf as long as she did not disturb Bertha's sheep. Which, if any, of Bertha's actions constituted a violation of the lease? 
I only. II only. Both I and II. Neither I nor II.