Ritu bought 5/2 dozen eggs at the rate of Rs 20 per dozen. He saw that 6 of them were rotten eggs. He sold the rest at the rate of Rs 22 per dozen. What percent profit or loss did he make -

• A. 12% हानि
• B. 12% लाभ
• C. 10 % हानि
• D. 10 % लाभ