Correct option is A
There is no fixed limit on the number of attempts for SSC CGL. As long as you meet the age limit and other eligibility conditions, you can apply as many times as you want. For example, if the age limit for your desired post is up to 30 years and you start applying at 21, you can try for several years. So, you get enough chances to prepare and improve each year. It’s helpful for students who may not succeed in the first try but want to keep going.