question: What is the major difference between distributed compressive sensing (DCS) and standard compressive sensing? option 1: In DCS, signals are more sparse than in standard compressive sensing option 2: In DCS, signals from multiple nodes exhibit intra-correlation option 3: In DCS, signals are processed by a distributed network option 4: In DCS, signals are processed by a single node option 5: In DCS, signals from multiple nodes exhibit inter-correlation 