Becky's Bakery sels three large muffins for every two small ones. A small muffin sells for $3.50 with a variable cost of $2.00. A large muffin sells for $5.00 with a variable cost of $2.50. What is the welghted- average contribution margin? (Round any intermediate calculations and your final answer to the nearest cent.) A. $2.10 per muffin B. $2.00 per muffin OC. $4.00 per muffin D. $4.25 per muffin