What Is the Result of the Following Addition Problem (Using $\begin{array} { r } 00001111 \\+ 10101010 \\\hline\end{array}$

What is the result of the following addition problem (using two's complement notation) ? $\begin{array} { r } 00001111 \\+ 10101010 \\\hline\end{array}$

A) 011000101
B) 10111001
C) 01010101
D) 10110101