There are three industrial firms in Happy Valley. The initial pollution level and cost of reducing pollution by 1 unit for each firm are as follows:

Firm a ________. Initial pollution level = 30 units, Cost of reducing pollution by 1 unit = $5
Firm B: Initial pollution level = 45 units, Cost of reducing pollution by 1 unit = $10
Firm C: Initial pollution level = 60 units, Cost of reducing pollution by 1 unit = $20

What is the initial pollution level and cost of reducing pollution by 1 unit for each firm in Happy Valley?