$\backslash$table$[[,$Japan $2013,$USA $2013,$Japan $2014,$USA $2014],[$Output $($kilograms$),100,100,100,100],[$Wage $($Labor$),13\mathrm{.}00,11\mathrm{.}25,13\mathrm{.}25,11\mathrm{.}55],[$Raw Materials,$44\mathrm{.}52,42\mathrm{.}17,41\mathrm{.}24,43\mathrm{.}14],[$Utilities$,10\mathrm{.}87,1\mathrm{.}55,11\mathrm{.}05,5\mathrm{.}37],[$Waste Treatment,$12\mathrm{.}00,1\mathrm{.}02,12\mathrm{.}50,1\mathrm{.}05],[$Research & Development,$0\mathrm{.}00,4\mathrm{.}48,0\mathrm{.}00,4\mathrm{.}50]]$

What are the units of productivity for this problem?

A$.$ kilograms$/$$

B$.$ $$/$kilogram

C$.$ Productivity does not have units in this problem