Let then a=b equals
0
As we learned
Collinear Vectors -
Representation of any vector as a linear combination of non-collinear vectors and is unique.
-
It means we are trying to represent as linear combination of non-collinear vectors
We will have unique values of a & b
It is possible only when a+2b=1 and a=b
So, option (D)
Study 40% syllabus and score up to 100% marks in JEE