During March, Younger Company's direct material costs for product T were as follows:

Actual unit purchase price	$6.50	per metre
Standard quantity allowed for actual production	2,100	metres
Quantity purchased and used for actual production	2,000	metres
Standard unit price	$6.00	per metre

Younger's material quantity variance for March was?

a. $650 unfavourable.

b. $600 unfavourable.

c. $600 favourable.

d. $650 favourable.