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A, B, C, and D are high school teachers who teach four subjects. A and B teach sociology. B and C teach mathematics and sociology. A teach the same subjects as those who teach D. D teaches two subjects that C does not teach. Who teaches three subjects?

A, B, C, and D are high school teachers who teach four subjects. A and B teach sociology. B and C teach mathematics and sociology. A teach the same subjects as those who teach D. D teaches two subjects that C does not teach. Who teaches three subjects? Correct Answer A

Teachers: A, B, C, and D.

Subjects: Mathematics and Sociology. 

Suppose the remaining two subjects are X and Y.

Teacher Sociology Mathematics  X    Y  
A ✓ X ✓ ✓
B ✓ ✓ X X
C ✓ ✓ X X
D X X ✓ ✓

So, A teaches three subjects Sociology, X, and Y.

Hence, "A" is the correct answer.

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