The numbers 2, 3, 4 and 5 occur (2 + 5k), (5k - 7), (2k - 3) and (k + 2) times, respectively. The average of rhe numbers is 2.85. Later on, the number 2 was replaced by 6 in all the places. What is the average of the new numbers?

A

2.4

B

5.25

C

3.85

D

4.75