After Mixing a Heat-Killed,phosphorescent (Light-Emitting)strain of Bacteria with a Living,nonphosphorescent

Multiple Choice

After mixing a heat-killed,phosphorescent (light-emitting) strain of bacteria with a living,nonphosphorescent strain,you discover that some of the living cells are now phosphorescent.Which observation(s) would provide the best evidence that the ability to phosphoresce is a heritable trait?

A) DNA passed from the heat-killed strain to the living strain.
B) Protein passed from the heat-killed strain to the living strain.
C) The phosphorescence in the living strain is especially bright.
D) Descendants of the living cells are also phosphorescent.