The respective ratio between Pooja's, Prathana's and Falguni's monthly income is 53:70:57. If Prarthana's annual income is rs. 4,20,000, what is the sum of pooja's and Falguni's annual incomes?

• A. Rs. 5,92,500
• B. Rs. 6,60,000
• C. Rs. 6,83,500
• D. Rs. 7,79,200