Can you help me answer this question?

If I place a 1m stick at two different locations on the same latitude then

a) they will have the same shadow length at local noon measured on the same day

b) they will have different shadow length at local noon depending on their longitude

c) they will have the different shadow length at local noon measured on the same day

d) they will have the same shadow length at local noon measured only on 20th of March