单项选择题

A、IRATHO_N2E_SR=(Intra-RATHOInSuccess/Intra-RATHOInAttempt)×100%
B、IRATHO_N2E_SR=(IRATHO_N2E_Attempt/IRATHO_N2E_Success)×100%
C、IRATHO_N2E_SR=(IRATHO_N2E_Success/IRATHO_N2E_Attempt)×100%
D、IRATHO_N2E_SR=(IRATHO_N2E_Success/Intra-RATHOInAttempt)×100%