Whom do Utterson and Poole find inside Jekyll's cabinet? What is strange about this person's clothes? At what conclusions does Utterson arrive based on this discovery?
a. Utterson and Poole find Mr. Hyde inside Jekyll's cabinet. The strange thing about Hyde's clothes is that they are much too large for him, as if he had borrowed them from someone else.

b. Utterson arrives at the conclusion that Mr. Hyde has some kind of control or connection to Dr. Jekyll, as he is found in his friend's cabinet wearing clothes that do not fit him.

c. Utterson suspects that Mr. Hyde and Dr. Jekyll are the same person, as the contrast between their physiques and the ill-fitting clothes suggest that they may be one and the same.

d. Utterson begins to question Dr. Jekyll's sanity or well-being, as it seems unlikely that he would allow someone like Mr. Hyde to have access to his personal belongings or living quarters.