The angle between the two vectors $\overrightarrow{\mathrm{A}}=3\widehat{\mathrm{i}}+4\widehat{\mathrm{j}}+5\widehat{\mathrm{k}}\mathrm{and}\overrightarrow{\mathrm{B}}=3\widehat{\mathrm{i}}+4\widehat{\mathrm{j}}+5\widehat{\mathrm{k}}$ is

• A

  ${60}^0$

• B

  Zero

• C

  ${90}^0$

• D

  None of these