Which of the following cannot be considered as a step of mechanism in chain reaction of methane with `Cl_(2)`?

Options

A. `Cl_(2) rarr Cl^(.)`
B. `CH_(4)+Cl^(.) rarr CH_(3)Cl+H^(.)`
C. `Cl^(.) +CH^(4) rarr CH_(3)^(.)+HCl`
D. `Cl^(.)+CH_(3)^(.)rarr CH_(3)Cl`

Explanation

b