Which of These Statements Best Describes the Formation of an Anion

Which of these statements best describes the formation of an anion?

A) An atom loses one or more electrons and becomes positively charged.
B) An atom loses one or more electrons and becomes negatively charged.
C) An atom gains one or more electrons and becomes positively charged.
D) An atom gains one or more electrons and becomes negatively charged.
E) None of these are correct.