Which one of the following statements can be obtained by applying the converse operation to the below hypothesis?

Hypothesis $\mathrm{I}$: If a square is a triangle, then the rectangle is a pentagon.

Consider the operations:

$f(X,Y,Z)=X\text{'}YZ+XY\text{'}+Y\text{'}Z\text{'}$ and $g(X,Y,Z)=X\text{'}YZ+X\text{'}YZ\text{'}+XY$

Which one of the following is correct?

Read the following information carefully and answer the question given below:

Statement :
I. Either he is happy or he is poor.
II. He is happy.
Inference:
He is poor.