Assume a two dimensional parity check code with even parity is used. We add a parity bit for each row and for each column as shown in the table below. The resulting codeword is [D1 D2 D3 D4...D9 P1 P2 P3..P6]. A single-bit error can be corrected using this channel code. D1 D4 D7 P4 D2 D5 D8 P5 For each received codeword, please indicate: [2 marks each] a) [111110011100011] D3 D6 D9 P6 Correction: a single bit error occurs (give the position of the bit that needs correcting e.g. D5) No error! Cannot correct, multiple errors. b) [001011011010001] P1 P2 P3 c) [1 1 0 1 0 0 0 0 1 0 1 0 0 0 1]