Complete the sentences about structural and frictional unemployment or neither. a) unemployment includes those involved in job search. b) unemployment can be caused by minimum wages. c) unemployment includes cyclical unemployment. d) unemployment is affected by the pace of technological progress. e) unemployment can be caused by efficiency wages. f) unemployment occurs as a result of labor surplus in a given market. g) unemployment can be a result of new people entering the labor force. h) unemployment typically declines in times of high economic growth. j) unemployment can be caused by labor unions