Which Is True of This Syllogism

Multiple Choice

Which is true of this syllogism?
All cats are dogs.
All dogs have whiskers.
Therefore, all cats have whiskers.

A) The conclusion is valid.
B) The conclusion is invalid because the major premise is false.
C) The conclusion is false because invalid reasoning was used to derive it.The minor premise is invalid.
D) It is impossible to say whether the conclusion is valid or not.