In Benjamin Libet's Experiments,the Timing of Conscious Will Was Shown

In Benjamin Libet's experiments,the timing of conscious will was shown to follow which pattern?

A) Brain activity begins,a conscious wish to act is experienced,and then behavioural action occurs.
B) A conscious wish to act is experienced,brain activity begins,and then behavioural action occurs.
C) Behavioural action occurs,brain activity begins,and then a conscious wish to act is experienced.
D) A conscious wish to act is experienced,behavioural action occurs,and then brain activity begins.