C#.NET — For the class below, which object-creation statements will compile? class Sample { int i; Single j; double k; public Sample(int ii, Single jj, double kk) { i = ii; j = jj; k = kk; } }

Introduction / Context:
Constructor overload resolution in C# requires a call signature that exactly matches an available constructor's parameter list. The class provides exactly one constructor taking three parameters: int, Single (float), and double.

Given Data / Assumptions:

• Only constructor is Sample(int, Single, double).
• No parameterless or 1–2 parameter overloads exist.

Concept / Approach:
Validate each object creation against the available signature. Literal 1.2f is a float, matching Single. A bare 2.4 is a double by default, matching the third parameter.

Step-by-Step Solution:

Verification / Alternative check:
Compiling with only the given constructor confirms that only the three-parameter call succeeds.

Why Other Options Are Wrong:

• A/B/C: Missing matching constructor overloads.
• E: Syntax error.

Common Pitfalls:
Writing 1.2 without f produces a double, not a float; here we correctly used 1.2f for the Single parameter.

Final Answer:
Sample s3 = new Sample(10, 1.2f, 2.4);