Study the given pattern carefully and select the number from among the given options that can replace the question mark (?).

Correct option is B

Logic =  from going left to right same operation is take place.

8 - 1 = 7 
7 – 1 = 6 

and 
6 – 2 = 4 
4 – 2 = 2 

and
2 + 3 = 5 
5 + 3 = 8 

and 
8 – 8 = 0 decrease
8 – 8 = 0 decrease

similarly, 
8 – 2 = 6

so next will also decrease by 2
6 – 2 = 4

missing number = 4