The average score of Sneha, Jothi and Prakash is 48. Sneha is 6 marks less than that of Praveen and 4 marks more than that of Prakash. If Praveen scored 18 marks more than the average of Sneha, Jothi and Prakash, what is the sum of Jothi and Prakash score?
A75
B80
C84
D90