[Solved] Which statement about the behavior of GroupBy in C# is TRUE? - Ans: GroupBy preserves the order of elements within each group as in the original... | C Sharp (C#)

C Sharp (C#) - LINQ Fundamentals

Which statement about the behavior of GroupBy in C# is TRUE?

AGroupBy preserves the order of elements within each group as in the original collection

BGroupBy sorts groups by their keys automatically

CGroupBy removes duplicate elements from groups

DGroupBy requires keys to be unique across all elements

Step-by-Step Solution

Solution:

Step 1: Understand element order in groups
GroupBy preserves the order of elements within each group as they appear in the source collection.
Step 2: Evaluate other statements
GroupBy does not sort groups automatically, does not remove duplicates, and keys need not be unique per element but per group.
Final Answer:
GroupBy preserves the order of elements within each group as in the original collection -> Option A
Quick Check:
GroupBy preserves element order inside groups [OK]

Quick Trick: GroupBy keeps element order inside groups, but groups order by first key seen [OK]

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Which statement about the behavior of GroupBy in C# is TRUE?