In the following question below are given some statements followed by some 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: 80% B are A. No B is C. Only few C are E. Conclusions: I. All B can be A. II. All A are B. III. Some  A are not B. IV. All E can be C.?

Option 2 : either II and III and IV follow.

The least possible Venn diagram is given below:

[ alt="F2 5dc2e7a6f60d5d0adf76128e Taniya.D 26-05-2020 Savita D1" src="//storage.googleapis.com/tb-img/production/20/05/F2_5dc2e7a6f60d5d0adf76128e_Taniya.D_26-05-2020_Savita_D1.png" style="width: 87px; height: 122px;">

Conclusions:

I. All B can be A  →  False (the possibility is true).

II. All A are B  → False (the possibilities are true but not defined).

III. Some  A are not B  → False (the possibility is true).

IV. All E can be C. → True (the possibility is true).

As conclusion II and III are complementary pairs so either or case is followed.

Hence, the correct answer is either II and III and conclusion IV follows.