A=(-1-1-1 +1 +1 -1 +1 +1) B (-1-1+1-1 +1 +1 +1-1) C=(-1+1-1 +1 +1 +1 -1-1 ) D= (-1+1 -1 -1 -1 -1 +1-1) Given the chip sequences for four stations A, B, C, and D above, answer the following questions: i) If Station A and B are sending a one and D is sending a zero at the same time, what will be the chip sequence recevied by a destination? Fully explain. [1.5 mark] ii) How do you know if the chip sequences of Station A, B and D are orthogonal? Fully explain.