Please choose the grammatically correct sentence for each questionwalt had less mistakes on his shakespeare test than her janice said

Group of answer choices
"Walt had fewer mistakes on his Shakespeare test than she did," Janice said.

"walt had less mistakes on his shakespeare test than her," Janice said.

"walt had less mistakes on his Shakespeare test than her," Janice said.

"Walt had less mistakes on his Shakespeare test than her," Janice said.