In which of the following steps is $ATP$ synthesised in glycolysis?

• A
  When $1,3$-bisphosphoglycerate is converted into $3$-phosphoglycerate.
• B
  When glucose is converted into glucose-$6$-phosphate.
• C
  When glyceraldehyde-$3$-phosphate is converted into $1,3$-bisphosphoglycerate.
• D
  When fructose-$1,6$-bisphosphate is broken into triose phosphates.