Between 1977 and 1987, the country of Ravonia lost about 12, 000 jobs in logging and wood processing, representing a 15 percent decrease in employment in the country' s timber industry. Paradoxically, this loss of jobs occurred even as the amount of wood taken from the forests of Ravoinia increased by 10 percent. Which one of the following, if true, most helps to resolve the apparent paradox? ["In 1977, overall unemployment in Ravonia was approximately 10 percent; in 1987, Ravonia's unemployment rate was 15 percent.", 'Between 1977 and 1987, the total number of acres of timberland in Ravonia fell, while the demand for wood products increased.', 'Since 1 977, a growing proportion of the timber that has been cut in Ravonia has been exported as raw, unprocessed wood.', 'Since 1977, domestic sales of wood and wood products have increased by more than export sales have increased.']