I would say that is true! good luck, hope this helps!
Since a first order reaction is in context, then when concentration of a is tripled, then the rate of reaction will also proportionately tripled.
Ne is the smallest
B is the biggest
It goes (smallest to largest) : Ne, F,C,B
Reacting mass=11.0
molar mass =53.45
moles=reacting Mass /molar mass
11.0/53.45=0.21moles