The probability of guessing correctly atleast 8 out of 10 answers on a true - false examination is :

Question

$\begin {array} {1 1} (A)\;\large\frac{7}{64} & \quad (B)\;\large\frac{7}{128} \\ (C)\;\large\frac{45}{1024} & \quad (D)\;\large\frac{175}{1024} \end {array}$