Context: Several systems were proposed as the new standard for the US, including the Japanese MUSE system, but all were rejected by the FCC because of their higher bandwidth requirements. At this time, the number of television channels was growing rapidly and bandwidth was already a problem. A new standard had to be more efficient, needing less bandwidth for HDTV than the existing NTSC.

Question: Why did the FCC reject systems such as MUSE?
Answer: their higher bandwidth requirements

Question: What was increasing and consuming a lot of bandwidth?
Answer: television channels

Question: Who rejected systems such as MUSE as the new standard for the US?
Answer: the FCC

Question: What was one of the requirements for a new standard system in the US?
Answer: had to be more efficient, needing less bandwidth

Question: What was the existing system at the time?
Answer: NTSC

Question: Why did the ECC reject systems such as MUSE?
Answer: Unanswerable

Question:  What was decreasing and consuming a lot of bandwidth?
Answer: Unanswerable

Question: Who rejected systems such as MUSE as the old standard for the US?
Answer: Unanswerable

Question: What was one of the requirements for an old standard system in the US?
Answer: Unanswerable

Question:  What wasn't the existing system at the time?
Answer: Unanswerable