iii. Given the following matrix of output coefficient and vector of final demand 0.25 0 0 500 A = 0.1 0.4 d 1000 0 0.15 0 10.3 750 a. Explain the meaning of the element 0 in the first row third column of the output matrix A. b. Obtain the gross output vector it will necessary to produce in order to meet the final demand vector c. If the production of one unit of the first good require 2 hours of labor time, one unit of the second good requires 5 hours of labor time, and one unit of the good require 1 unit of labor time, approximately how many hours of labor time are needed to meet the vector of the final demand? iii. Given the following matrix of output coefficient and vector of final demand 0.25 0 0 500 A = 0.1 0.4 d 1000 0 0.15 0 10.3 750 a. Explain the meaning of the element 0 in the first row third column of the output matrix A. b. Obtain the gross output vector it will necessary to produce in order to meet the final demand vector c. If the production of one unit of the first good require 2 hours of labor time, one unit of the second good requires 5 hours of labor time, and one unit of the good require 1 unit of labor time, approximately how many hours of labor time are needed to meet the vector of the final demand