Let the angle between two nonzero vectors $\overrightarrow{\mathrm{A}} \mathrm{and} \overrightarrow{\mathrm{B}}$ be 120° and its resultant be $\overrightarrow{\mathrm{C}}$.

C must be equal to $|\overrightarrow{\mathrm{A}}-\overrightarrow{\mathrm{B}}|$

C must be less than $|\overrightarrow{\mathrm{A}}-\overrightarrow{\mathrm{B}}|$

C must be greater than $|\overrightarrow{\mathrm{A}}-\overrightarrow{\mathrm{B}}|$

C may be equal to $|\overrightarrow{\mathrm{A}}-\overrightarrow{\mathrm{B}}|$