can someone help me here, did I do it right?

the actual bit string transmitted will be (

11010101) or not? .if its not plz help me findin the correct answer with drawing

\begin{tabular}{rrrrrl} 1 & 0 & 0 & 1 & 1 & \\ \hline 1 & 0 & 0 & 0 & & \\ 1 & 0 & 0 & 1 & \\ \hline 0 & 0 & 1 & 1 \\ 0 & 0 & 0 & 0 \\ \hline 0 & 1 & 1 & 0 \\ 0 & 0 & 0 & 0 \\ & & 1 & 1 & 0 \\ & & & 1 & 1 & 1 \end{tabular} 1001001 A bit stream 11010101 is transmitted using the standard CRC method. The key is 1001. a. What is the actual bit string transmitted? b. Suppose the third bit from the left is inverted during transmission. How will receiver detect this error