Correct option is A
Typing speed is only required for certain posts in SSC CGL like Tax Assistant (Central Excise and Income Tax) and a few others. For these posts, candidates need to have a typing speed of 8,000 key depressions per hour, which is about 27–30 words per minute in English. It's not very high but does need regular practice to maintain speed and accuracy. The typing test is usually part of the Skill Test stage (after Tier 2). Candidates applying for other posts do not need to worry about this requirement. Still, having basic typing skills is always a plus!