A company developed the following per$-$unit standards for its product: $5$ kilograms of direct materials at $$3\mathrm{.}00$ per kilogram. Last month, $1,000$ kilograms of direct materials were purchased for $$3030.$ Also last month, $750$ kilograms of direct materials were used to produce $143$ units.

What was the direct materials quantity variance for last month?

$$105$ unfavourable

$$105$ favourable

$$715$ unfavourable

$$715$ favourable