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Which sentence below uses punctuation correctly?
The wall of the ranger station was bare, except for a framed poster quoting John Muir;
I only went out for a walk and finally concluded to stay out till sundown, for going out, I found, was really going in.
The wall of the ranger station was bare, except for a framed poster quoting John Muir,
O
I only went out for a walk and finally concluded to stay out till sundown, for going out, I found, was really going in.
The wall of the ranger station was bare, except for a framed poster quoting John Muir:
I only went out for a walk and finally concluded to stay out till sundown, for going out, I found, was really going in.
The wall of the ranger station was bare, except for a framed poster quoting John Muir.
I only went out for a walk and finally concluded to stay out till sundown, for going out, I found, was really going in.

I only went out for a walk and finally concluded to stay out till sundown, for going out, I found, was really going in. The wall of the ranger station was bare, except for a framed poster quoting John.

b) Muir,

I only went out for a walk and finally concluded to stay out till sundown, for going out, I found, was really going in. The wall of the ranger station was bare, except for a framed poster quoting John.

Muir:

I only went out for a walk and finally concluded to stay out till sundown, for going out, I found, was really going in. The wall of the ranger station was bare, except for a framed poster quoting John.

The comma behind bare needs to be removed.