What Is the Direct Manufacturing Labour Partial Productivity,assuming 10 000

What is the direct manufacturing labour partial productivity,assuming 10 000 widgets were produced during 2018 and 40 000 direct manufacturing labour-hours were used?

A) 0.25 unit per direct manufacturing labour-hour
B) 0.50 unit per direct manufacturing labour-hour
C) 1.00 unit per direct manufacturing labour-hour
D) 0.75 unit per direct manufacturing labour-hour