The Following Materials Standards Have Been Established for a Particular $\begin{array}{lccc}\text {Standard quantity per unit of output}&\text {8.3 metres}\\\text {Standard price}&\text {\$ 19.15 per metre}\\\end{array}$

The following materials standards have been established for a particular product: $\begin{array}{lccc}\text {Standard quantity per unit of output}&\text {8.3 metres}\\\text {Standard price}&\text {\$ 19.15 per metre}\\\end{array}$
The following data pertain to operations concerning the product for the last month: $\begin{array} { l r } \text { Actual materials purchased } & 7,500 \text { grams } \\\text { Actual cost of materials purchased } & \$ 141,375 \\\text { Actual materials used in production } & 7,100 \text { grams } \\\text { Actual output } & 700 \text { units }\end{array}$ What was the materials price variance for the month?

A) $2,250 favourable.
B) $7,540 unfavourable.
C) $7,660 unfavourable.
D) $24,317 unfavourable.