What is the definition of vector addition and subtraction?

Vector addition is the process of combining two or more vectors into a single vector, while vector subtraction is the process of finding the difference between two vectors.
Vector addition and subtraction are only possible when the vectors have the same magnitude and direction.
Vector addition and subtraction can be performed graphically by drawing the vectors to scale and using the parallelogram rule or the triangle rule.
a) Only statement 1 is correct.
b) Statements 1 and 3 are correct.
c) All statements are correct.
d) None of the statements are correct.