The correct answer is Option B:

Solution:
Considering the given options.

Option A.   

Option B. 

On Option B:  Considering the given number pattern.

Here, the numbers are increasing.
So, we first find the rule.

Note that:
10 + 10 = 20
20 + 10 = 30
30 + 10 = 40
40+ 10 = 50

So, the rule is "add 10", and this is the required answer.

Hence, the correct counting pattern with the rule ‘add ten’ is Option B: