[单选题]
Electrons are accelerated between two conducting platpk zqyf*e+zdi5,2 l w(es thp+ )u0o4laav*ck vr2 * ezep6fat have a potential difference of 100V. ae2*oca u) ppv6l4 zv kre*0+fEstimate the total energy that would be delivered to $10^{21}$ electrons by the conducting plates.
A. $10^2\,J$
B. $10^3\,J$
C. $10^4\,J$
D. $10^5\,J$