Multiple choice technology programming languages What is the output of the command $sed 's/([a-z]) *([a-z])/\2,\1/' file sAGAR,PRAVEEN Sagar, praveen ,SAGAR,PRAVEEN sagar,Praveen Reveal answer Fill a bubble to check yourself B Correct answer Explanation The sed regex captures two lowercase words and swaps them with a comma and space. Given input like 'praveen SAGAR', it produces 'Sagar, praveen' - the first word becomes lowercase at start, second word capitalized at start, comma-space separated.