The probability of guessing correctly at least 8 out of 10 answers on a true-false type examination is

Question

$\begin{array}{1 1} (A)\;\large\frac{7}{64}\\(B)\;\large\frac{7}{128}\\(C)\;\large\frac{45}{1024}\\(D)\;\large\frac{7}{41}\end{array} $