... of resident participation receiving official response is lower, discouraging resident participation ... about a likelihood of official response. Eliminate.
B- A ... -> Reduced chance of official response -> discourages participation. /C -> ...
I applied to HLS with 25% LSAT and received an interview request. HLS later in the admissions cycle clarified that people who have taken both LSAT and GRE report both (even though it wasn't stated at the time of submitting application).