return dictionary with nth value in all lists within a nested dictionary and retain other values

Question

I have a dictionary that looks like this:

list_in = {\'key0\': {a: [A, B, C], b: [A, B, C]}, \'key1\': {c: [A, B, C], d: [A, B, C]}, \'key2\': {e: 0, f: 0}}
<