The two vectors A and B are drawn from a common point and C = A + B...

The two vectors $\overrightarrow{\mathrm{A}}$ and $\overrightarrow{\mathrm{B}}$ are drawn from a common point and $\overrightarrow{\mathrm{C}}=\overrightarrow{\mathrm{A}}+\overrightarrow{\mathrm{B}},$ then angle between $\overrightarrow{\mathrm{A}}$ and $\overrightarrow{\mathrm{B}}$ is - (1) $90^{{}^{\circ}}$ if $\mathrm{C}^{2}=\mathrm{A}^{2}+\mathrm{B}^{2}$ (2) greater than $90^{{}^{\circ}}$ if $\mathrm{C}^{2}< \mathrm{A}^{2}+\mathrm{B}^{2}$ (3) greater than $90^{{}^{\circ}}$ if $\mathrm{C}^{2} > \mathrm{A}^{2}+\mathrm{B}^{2}$ (4) less than $90^{{}^{\circ}}$ if $\mathrm{C}^{2} > \mathrm{A}^{2}+\mathrm{B}^{2}$ Correct options are -