Why does A return twice in c#?

Preface: As a curious beginner to C# in GH I have a question or comment that is more about my curiosity than anything else...

I've noticed that the c# component, when written with 2 inputs (ie. x, y) will always return two outputs even when the processes involved do not depend upon the inputs.

For example: input x inputs a single brep and input y inputs a single curve, while a completely independent process that does not draw from x or y takes place and example of which is below:

// Declare array1 as 1,2,3,1

int [] array1 = {1,2,3,1};

// Optional test processes to send to A output

int aL = array1.Length;

int ai = array1[3];

// If or when either of these values are sent to A (output), A will return the correct answer in each case but in each case the answer appears twice rather than just once.  For example let's send ai to A.

A = ai;

The result ai appears at A as a two line solution of '1' and '1'.  If the output y is removed then only '1' is shown, etc.  It seems that the two inputs (x, y) cause the A to output twice, regardless of the process that is associated with A.

It'd be nice if this weren't the case...