Choose the set in which the third statement is a logical conclusion of the first two.
A. No sun is not white. All moon is sun. All moon is white.
B. All windows are open. No open space is allocated. All window is closed space.
C. No German can fire. All Americans bombard. Both, Germans and Americans can fight.
D. No X is Z. No Z is Y. No X is Y.
Statement A: No sun is not white => All Sun is white. So, Sun is a subset of white. All moon is sun => Moon is a subset of Sun. So moon is a subset of white.
In none of the other three statements do the third sentences follow from the respective first two statements.
Option a) is the correct answer.
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