C#.NET — Jagged arrays: determine which statements are correct for the following code. Code: int[][] intMyArr = new int[2][]; intMyArr[0] = new int[4]{6, 1, 4, 3}; intMyArr[1] = new int[3]{9, 2, 7}; Which statements are true? intMyArr is a reference to a 2-D jagged array. The two rows of intMyArr are stored in adjacent memory locations. intMyArr[0] refers to the 0th 1-D array and intMyArr[1] refers to the 1st 1-D array. intMyArr refers directly to intMyArr[0] and intMyArr[1]. intMyArr refers to intMyArr[1] and intMyArr[2].

Introduction / Context:
This item probes understanding of jagged arrays (arrays of arrays) in C#. A jagged array 'int[][]' holds references to independent 1-D arrays. Rows can have different lengths and are separate objects on the heap, unlike a single rectangular block.

Given Data / Assumptions:

• Two rows: lengths 4 and 3.
• Indexing uses intMyArr[row][column].

Concept / Approach:
Jagged arrays are not guaranteed to place each inner array in adjacent memory locations. The outer 'int[][]' variable refers to the outer array object whose elements are references to inner arrays. Access semantics make intMyArr[0] and intMyArr[1] the first and second inner arrays respectively.

Step-by-Step Solution:

Verification / Alternative check:
Print lengths: Console.WriteLine(intMyArr[0].Length); // 4, Console.WriteLine(intMyArr[1].Length); // 3. This confirms separate inner arrays.

Why Other Options Are Wrong:
Any option including (2), (4), or (5) is incorrect because those statements misrepresent jagged array memory layout or use an invalid index.

Common Pitfalls:
Confusing jagged arrays with rectangular arrays int[ , ] and assuming a contiguous 2-D memory layout.

Final Answer:
1 and 3 only