Which of the Following Statements Involve Notation, Unit, or Conceptual $A$

Short Answer

Which of the following statements involve notation, unit, or conceptual errors? For each statement, answer $A$ if the statement is acceptable, or $E$ if it is erroneous.
- $\vec{F}_{\text {tot }}=\vec{F}_{1}+\vec{F}_{2}$ implies that $\left|\vec{F}_{2}\right|=\left|\vec{F}_{\text {tot }}\right|-\left|\vec{F}_{1}\right|$ .