An industrial system has two industries with the following input requirements. (a) To produce $1.00 worth of output, Industry A requires $0.30 of its own product and $0.40 of Industry B's product. (b) To produce $1.00 worth of output, Industry B requires $0.40 of its own product and $0.10 of Industry A's product. Find D, the input-output matrix for this system.