Chloro acetic acid (molecular weight M) is converted into $C{l}_2$ and $C{O}_2$. Which statement is correct ?

$Cl-C{H}_{2}COOH\to C{l}_2+C{O}_2$

$Cl$ is oxidized

C is oxidized

$$\begin{gathered} E=\frac{Mol.wt}{n-factor}; \\ n-factor =n-f_{Cl}+n-f_c \end{gathered}$$

change in oxidation state of Cl = -1 to 0 ( n-factor = 1)

total change in oxidation state of C = 5 + 1 = 6 

(-1 to + 4; and +3 to +4 )