A student is performing a Benedict's test on an unknown substance. The student adds the reagent (the chemical required to make a color change), and nothing happens. Which conclusion can the student make? (1 point)

The test was inconclusive because the student needed to also test with iodine or vinegar.
O The substance is not glucose based.
O The substance is glucose based.
• The test was inconclusive because the student forgot to add heat.

• The test was inconclusive because the student forgot to add heat.