1. The problem statement, all variables and given/known data The diagram shows 3 vector all of equal length. Which statement is true? a. A+B=A-C b. A+B=B-C c. A-B=2A-C d. A-B=2A+C e. 2A+2B=2C 2. Relevant equations None 3. The attempt at a solution I just added them in my head, and thought that e. 2A+2B=2C would also work. Why doesn't it?