Which process belongs to the temporal summation?‍

A、The response to the successive subthreshold stimulation at one site of the membrane.;
B、The response to the successive suprathreshold stimulation at one site of the membrane.;
C、The response to the several subthreshold stimulus simutenous applied to different site on the cell membrane.;
D、The response to the several suprathreshold stimulus simutenous applied to different site on the cell membrane.;
E、 Responst to a suprathreshold stimulation.