Write a question about the following article.

One day my sister came and picked me up , and I was relaxing in her car . I had my arms behind my head , thinking of nothing in particular , when suddenly she mentioned that my armpits stank . She did n't say it in a mean or hurtful way , but I was still embarrassed , because it was my body , and it was yet another thing I had to deal with , had to think about , had to mask , had to play down .

Question:
Why does the author 's sister 's comment most probably give rise to a sense of embarrassment in the author ?
OPTIONS:
(a). upon hearing that their armpits stank , the author felt self conscious and like a failure in another area of life;
(b). the author had hoped to be the first one between them to make an embarrassing remark to the other;
(c). None of the above choices .;
(d). the author 's sister used a tone that felt especially demeaning and critical to the author;