How many $ATP$ molecules are produced directly during the glycolysis of $1$ molecule of glucose?

Given below are two statements: One is labelled as Assertion $A$ and the other is labelled as Reason $R$:
Assertion $A:$ $ATP$ is used at two steps in glycolysis.
Reason $R:$ First $ATP$ is used in converting glucose into glucose-$6$-phosphate and second $ATP$ is used in conversion of fructose-$6$-phosphate into fructose-$1,6$-bisphosphate.
In the light of the above statements,choose the correct answer from the options given below:

The first product of the dephosphorylation phase of glycolysis is...

During phosphorylation in glycolysis,which $3C$ sugars are transformed into each other?

Which one of the following products is formed during the glycolysis of glucose?

The number of $ATP$ molecules utilized for the breakdown of one molecule of glucose during glycolysis is