Which of the Following Is True Regarding the Nature of Bailments

Which of the following is true regarding the nature of bailments?

A) Bailments may be express but not implied.
B) Bailments may be implied but not express.
C) Bailments may be implied or express.
D) Bailments that are not express may be enforced as implied bailments only if a gratuitous bailment is involved.
E) Bailments that are not express may be enforced as implied bailments only if a mutual benefit bailment is involved.