A physical quantity is represented by $\mathrm{X}={\mathrm{M}}^{\mathrm{a}}{\mathrm{L}}^{\mathrm{b}}{\mathrm{T}}^{-\mathrm{c}}$. If percentage errors in the measurements of M, L and T are $\mathrm{\alpha }\mathrm{\%}, \mathrm{\beta }\mathrm{\%}\text{ and }\mathrm{\gamma }\mathrm{\%}$ respectively, then total percentage error is

• A

  $(\mathrm{\alpha a}+\mathrm{\beta b}-\mathrm{\gamma c})\mathrm{\%}$

• B

  $(\mathrm{\alpha a}+\mathrm{\beta b}+\mathrm{\gamma c})\mathrm{\%}$

• C

  $(\mathrm{\alpha a}-\mathrm{\beta b}-\mathrm{\gamma c})\mathrm{\%}$

• D

  0%