Which of the following choices represents the highest and lowest respective coordinates of activity level and corresponding total costs? ( $8200,1000 hours), $3200,500 hours) (3200 hours, \$500), ( 8200 hours, \$1000) ( 8200 hours, $1000) ), (3200 hours, $500 ) ( $3200,500 hours), ( $8200,1000 hours)