50,100,150,?,250,?

Which number fills the gap?

Given Pattern is :

$50,100,150,?,250,?$

We can see that the pattern follows an addition pattern i.e
The values are increasing by adding$50$.

$$\begin{gathered} 50 \\ 50+50=150 \\ 150+50=200 \\ 200+50=250 \\ 250+50=300 \end{gathered}$$
Therefore the complete pattern is as follows:

$50,100,150,200,250,300$

Hence, Option A is the correct answer.