A certain pure substance is a solid at 15°C. Sanjay heated a sample of the solid substance in a beaker using a Bunsen burner during science class. He and his partner recorded the temperature at one-minute intervals. Their data is recorded in the table below. What conclusion could be applied to the students' data?

A) As the substance was heated and the temperature rose, a change of state occurred.
B) It took ten minutes for the solid substance to change state and melt into a liquid.
C) As the substance was heated, both the temperature and the kinetic energy increased.
D) The Bunsen burner did not supply enough thermal energy to melt the solid substance.