Which version of the candidate's answer best demonstrates strong Are Right a Lot signals including scope boundary, individual ownership, and quantification?

Which version of the candidate's answer best demonstrates strong Are Right a Lot signals including scope boundary, individual ownership, and quantification? A) "I was working on the payment system and noticed slow transactions. I escalated the issue to the platform team. They fixed it, and things improved." B) "We noticed the delivery delays together and investigated as a team. We found the root cause and deployed a fix. Customer complaints dropped significantly." C) "I noticed an issue outside my team and decided to fix it myself. I investigated the root cause and deployed a patch. Things improved after the fix." D) "During routine review, I spotted a 0.3% webhook drop outside my team's scope with no ticket. I traced the race condition, wrote a fix, and coordinated rollout with Platform. The drop rate went to zero, protecting $8K/week in revenue."