Helen Proposed a New Theory of Child Development

Helen proposed a new theory of child development.Using this theory, she has successfully described and explained past behaviours, but she is unable to predict or explain new observations.How should Helen's theory be categorized?

A) It is a superior theory because it describes and explains past behaviour, which is more than most theories do.
B) It is a weak theory because it is clearly based on flawed methodology since it cannot predict future behaviour.
C) It is an adequate theory because it both describes and explains.
D) It is a weak theory because if it doesn't predict or explain new observations, it is of little value.