Sorting MCQ questions alphabetically

I've did as you recommenced it seems to work but somehow the previous line is duplicated and in the end the text is distorted as it repeats too many times

Cushing's syndrome?
A. Estradiol.
B. Testosterone.
C. Prednisolone.
D. Progesterone.
E. Diethylstilbestrol. .

is turned into one cell, but the text repeats too many times

Cushing's syndrome? A. Estradiol. A. Estradiol. B. Testosterone. A. Estradiol. B. Testosterone. B. Testosterone. C. Prednisolone. A. Estradiol. B. Testosterone. B. Testosterone. C. Prednisolone. B. Testosterone. C. Prednisolone. C. Prednisolone. D. Progesterone. A. Estradiol. B. Testosterone. B. Testosterone. C. Prednisolone. B. Testosterone. C. Prednisolone. C. Prednisolone. D. Progesterone. B. Testosterone. C. Prednisolone. C. Prednisolone. D. Progesterone. C. Prednisolone. D. Progesterone. D. Progesterone. E. Diethylstilbestrol. .