Symbols: Q = Number of Workers Demanded; W = Wage

Symbols: Q = number of workers demanded; W = wage rate; and VTP = value of the cumulative total product (output) of the particular number of workers. Assumptions: (1) The current wage in Zinnia is $20, and the current wage in Marigold is $12; (2) full employment exists in both countries.At the current wage rate, the combined number of workers in the two nations is

A) 2.
B) 3.
C) 5.
D) 4.