In a first order reaction, the time required to reduce the concentration of reactant from $1$ mole$/$litre to $0\mathrm{.}5$ mole$/$litre will be $\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ that required to reduce it from $10$ moles$/$litre to $5$ moles$/$litre in the same volume $?$

$0$

A$.$ More than

B$.$ Less than

C$.$ Same as

D$.$ Data insufficient; can$$t be predicted