Maximus Ltd uses a standard costing system. The following information pertains to direct materials for the month of July:

Standard price per kg	£ 18.00
Actual purchase price per kg	£ 16.50
Quantity purchased	3 100 kg
Quantity used	2 950 kg
Standard quantity allowed for actual output	3 000 kg
Actual output	1 000 units

What is the standard quantity of direct materials per 1 unit for Maximus Ltd?

a. 3.25 kg

b. 3.10 kg

c. 3.5 kg

d. 3.00 kg