When shown boards for just a few seconds from previous chess games, grandmaster chess players display an impressive ability to recall the exact position of all of the pieces on the board, but when shown a board with randomly placed pieces, the average person performs just as well as grandmasters at this task.

A. for just a few seconds from previous chess games, grandmaster chess players display an impressive ability to recall the exact position of all of the pieces on the board, but when shown a board with randomly placed pieces, the average person performs just as well as grandmasters at this task

B. for just a few seconds from previous chess games, grandmaster chess players display an impressive ability to recall the exact position of all of the pieces on the board, but when shown a board with randomly placed pieces, grandmasters perform just as well as the average person does at this task

C. from previous chess games for just a few seconds, grandmaster chess players display an ability to recall the exact position of all of the pieces on the board that is impressive, but when shown a board with randomly placed pieces, average people perform just as well as grandmasters do at this task

D. from previous chess games for just a few seconds, grandmaster chess players display an impressive ability to recall the exact position of all of the pieces on the board, but when they are shown boards with randomly placed pieces, grandmasters perform no better at this task than the average person

E. from previous chess games for just a few seconds, grandmaster chess players display an ability to recall the exact position of all of the pieces on the board that is impressive, but when they are shown boards with randomly placed pieces, grandmasters perform just as well at this task as does the average person

My Ques: What is wrong with option B?