Becky's Bakery sells 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 $5.50 with a variable cost of $3.00. What is the weighted - average contribution margin? (Round any intermediate calculations and your final answer to the nearest cent.) O A. $4.50 per muffin O B. $2.00 per muffin C. $2.10 per muffin OD. $4.00 per muffin