The following LC-3 instructions execute starting from the point shown by the comment.

1011 1110 1110 1111 ; this is the content of address D=xDEAD

; start LC-3 execution here

0010 100 111111110

0101 101 100 1 10000

1011 101 111111100

; end LC-3 execution here

After the code reaches the end of the code (the last comment), what bits are held in R4? And in R5? And in R7? And in memory address D? If you cannot know the bits held, explain why.