Innova Discs has two divisions - Standard and Premium. Each division has many different products. The following information is available. Standard Division Sales: $400,000 Variable costs: $280,000 Contribution margin: $120,000 Premium Division Sales: $600,000 Variable costs: $360,000 Contribution margin: $240,000 Total fixed costs: $300,000 What the weighted average contribution margin ratio? 34% 35%. 36%. 50%