Levobunolol (Betagan) is a drug used in the treatment of glaucoma. Which one of the following best describes the action it exerts on the eye.. Decreases the production of aqueous humor

Levobunolol (Betagan) is a drug used in the treatment of glaucoma.
Which one of the following best describes the action it exerts on the eye?

A) Miotic

B) Decreases the production of aqueous humor***

C) Interferes with the enzyme carbonic anhydrase

D) Acts as an osmotic diuretic

E) Mydriatic.