Consider three hosts A, B, and C using Code Division Multiple Access (CDMA) with chip length m = 4. Their chips are the following: A: +1- 1 +1-1; B: +1 +1 1-1; C: +1-1-1+1 Show the resulting signal S when A transmits a 1 and C transmits a 1. Discuss and show how we can infer from S that B did not transmit