CIND Ltd produces three brush sets; the artists set, the painters set and the make-up set.

The following data for each brush is available for the next quarter:

Demand sets (units)	150	300	350
	Artist	Painters	Make up
Sale Revenue per unit	43	35	25
Variable costs per unit	37	27	16
Allocated Fixed costs per unit	7	2	4
Profit per unit	(1)	6	5

All brush sets use animal hair as follows:

	Artist	Painters	Make up
Hair per set (grammes)	12	20	36

The supplier for animal hair has gone bankrupt and supply will be affected for the next quarter.

With reference to the above explain the concept of a limiting factor.