On Occasion,the Notation = [A,θ] Will Be a Shorthand

Multiple Choice

On occasion,the notation = [A,θ] will be a shorthand notation for .
-Dana says any vector Can be represented as the sum of two vectors:
Ardis says any vectorCan be represented as the difference of two vectors: Which one,if either,is correct?

A) They are both wrong: every vector is unique.
B) Dana is correct: Any vector can be represented as a sum of components and not as a difference.
C) Ardis is correct: Any vector can be represented as a difference of vector components and not as a sum.
D) They are both correct: A difference of vectors is a sum .
E) They are both wrong: Vectors can be moved as long as they keep the same magnitude and direction.