What are Mellissa Ltd's gross profit and net profit after tax margins for 2021? 2021 2020 Sales $1,200,000 $1,000,000 Cost of goods sold $850,000 $ 700,000 Operating expenses $250,000 $200,000 Income taxes $35,000 $29,000 Group of answer choices 7.10% and 30%, respectively 29.17% and 5.42%, respectively 30% and 7.10%, respectively 5.42% and 29.17% respectively