Sales salaries and commissions are $17,000 when 135,000 units are sold; and $13,000 when -12 85,000 units are sold. Using the high-low method, what is the variable portion of sales salaries and ?commission Nothing mentionedo ( ) per unit 0.06 $ 0 per unit 0.1$ o per unit 0.075$ 0 per unit 0.08 $ O per unit 0.12 $ O per unit 0.05 $ Sales salaries and commissions are $17,000 when 135,000 units are sold; and $13,000 when -13 85,000 units are sold. Using the high-low method, what is the fixed portion of sales salaries and ?commission 6200 O 6650 5800 6640 6600 O 6625 (1) Nothing mentioned o