Questions and two statements are given. Find out which statement is/are necessary/sufficient to answer the given question.

Question:
Which one is the lightest among A, B, C, D, and E?

Statements:
I. C is heavier than B and E but lighter than D.
II. D is not the heaviest.

Correct option is C

Statement I:
C is heavier than B and E but lighter than D.
This gives us a partial order:
D > C > B/E
(We don’t know the relative order between B and E.)
Also, A is not mentioned at all.
 So we cannot determine the lightest among all five.
 Statement I is not sufficient.
Statement II:
D is not the heaviest.
This only tells us that someone else is heavier than D.
But it gives no information about others’ weights or comparisons.
 Statement II is not sufficient.
Combining Both Statements:
From Statement I:
D > C > B/E
From Statement II:
D is not the heaviest → Someone is heavier than D (let's say A?)
But we still have:
No clear relation involving A.
No clear relation between B and E.
No full chain to determine who is lightest.
Still insufficient data to identify the lightest among all five.
 Final Answer: (C) Data insufficient