A company developed the following per-unit standards for its product: 5 kilograms of direct materials at $3.00 per kilogram. Last month, 1000 kilograms of direct materials were purchased for $2800. Also last month, 650 kilograms of direct materials were used to produce 130 units. What was the direct materials price variance at the time of purchase?

a)$12200 favourable

b)$200 favourable

c)$12200 unfavourable

d)$200 unfavourable