‘How much will the Bills prepare for the 49ers’ option attack with Kaepernick at quarterback? “It’s a lot,” Bills coach Chan Gailey said Wednesday in a conference call with reporters who cover the 49ers. “That puts a lot of stress on your defense to prepare for that week-in and week-out. He’s done a good job with running what they’ve put in and they’ve done a good job of keeping it varied, so it’s not the same all the time.”‘