Question

Each question contains six statements followed by four sets of combinations of three. Choose the set in which the combinations are logically related.
A. All vegetarians eat meat.
B. All those who eat meat are not vegetarians.
C. All those who eat meat are herbivorous.
D. All vegetarians are carnivorous.
E. All those who eat meat are carnivorous.
F. Vegetarians are herbivorous.

• A. BCE
• B. ABF
• C. ACD
• D. ACF

Answer 1

The correct option is D ACF

Clearly, A, C and F are logically related. A and B, B and C, as well as C and E are contradictory statements.
Statement (A) :All vegetarians eat meat [A type].
Statement (C): All those who eat meat are herbivorous (A Type).
$A+A\Rightarrow A$
$\therefore$ All vegetarians are herbivorous [Statement F].