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B
44 + XO
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C
44 + XXX
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D
44 +YY
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Solution
The correct option is A 44 + XXY Klinefelter's syndrome also known as 47 + XXY or XXY (44 autosomes and 3 sex chromosomes) is the set of symptoms that result from two or more X chromosomes in males. Therefore, the correct answer is option A.