Which statement correctly differentiates metals, metalloids, and nonmetals based on their electron tendencies?

• A. Metals and nonmetals both tend to gain electrons, while metalloids tend to lose electrons.
• B. Metals tend to lose electrons, nonmetals tend to gain electrons, and metalloids have variable tendencies.
• C. Metals and metalloids both tend to lose electrons, while nonmetals tend to gain electrons.
• D. Metals tend to gain electrons, nonmetals tend to lose electrons, and metalloids have variable tendencies.