Reasoning key
DS-A at 0.75: valid accepted A1/A2; valid rejected A3; invalid accepted A4; invalid rejected A5/A6. At 0.60: all valid accepted, A4/A5 incorrectly accepted. At 0.85: only A1 accepted, no invalid accepted; A2/A3 rejected. DS-B at 0.70: B1/B2 accepted, B3 rejected, B4 incorrectly accepted, B5/B6 rejected. At 0.55: all eligible accepted and B4/B5 incorrectly accepted. At 0.80: only B1 accepted and no ineligible requests accepted. There is no uniquely justified policy threshold without a cost criterion and more evidence. Credit a supported conditional judgment; do not reward the largest number automatically.
Changed-condition response
The learner should identify that one valid card moves from rejected to accepted; the rule, other cases and missing real-world evidence remain unchanged.
Observe the individual explanation and record the task version and instructional help. Finish missing checks later; do not infer a band from unobserved work.