Soni sold a mobile phone to Raju at a profit of 10%, Raju sold it to Alok at a loss of 5% and Alok sold it to Sohan at a profit of 20%. If Sohan bought it for ₹ 6,270, what is the cost price (in ₹ ) of the mobile for Soni?

A

₹5,000

B

₹5,500

C

₹4,500

D

₹4,650