Stevens sells personal property to Baurer for $$1,700$ due in $30$ days from the date of delivery. Stevens assigns the account to Adams without consideration. Which action precludes revocation by Stevens?

A$.$ Death or bankruptcy of Stevens.

B$.$ Subsequent assignment of the same rights by Stevens to George.

C$.$ Notice to Adams by Stevens of revocation.

D$.$ Assignment by Adams to Ansel for consideration.