In the following question below are given three statements followed by four conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: I. 0% Jacket is Black. II. 100% Black are Blanket. III. 30% Blanket are Cotton. Conclusions: I. No Blanket is a Jacket. II. Some Black are Cotton. III. Some Cotton are Jacket. IV. Some Jacket are Blanket.?

Option 4 : Either I or IV follows

Consider the following least possible Venn diagram,

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Conclusions:

I. No Blanket is Jacket → not follows (It is possible but not definite).

II. Some Black are cotton → not follows (It is possible but not definite).

III. Some Cotton are Jacket → not follows (It is possible but not definite).

IV. Some Jacket are Blanket → not follows (It is possible but not definite).

Since conclusion I and IV form complementary pair.

Hence, either conclusion I or IV follows.