If $∆\mathrm{X}$ is absolute error in the measurement of X and $∆\mathrm{Y}$ is absolute error in the measurement of Y, then maximum absolute error in the measurement of difference of X and Y is

• A

  $\pm (\mathrm{\Delta X}-\mathrm{\Delta Y})$

• B

  $\pm (\mathrm{\Delta X}+\mathrm{\Delta Y})$

• C

  $\pm \frac{\mathrm{\Delta X}}{\mathrm{\Delta Y}}$

• D

  $\pm \mathrm{\Delta X\Delta Y}$