In the following question, two sentences are given with some underlined phrases which are correct. Phrases of sentence Il could replace phrases of the sentence I without altering the original meaning of the sentence. Select the option that has the correct pair/s of phrase replacement.

I.  I only refer to the matter in passing(A), for, in my position of partner and confidant I am obliged to(B) be particularly careful to avoid any indiscretion(C)

II. After embarrassed apologies, she seemed compelled to(D) sit down and chat, as if idle conversation might be penance(E) for the pilfered peach pie.