An unknown was tested using a procedure similar to the one for this experiment. It was found to contain Co and Pb ions. What does this suggest about the painting? Hint: Refer to the Pigment Handbook on page 112 of your lab manual for additional assistance on this question. Group of answer choices The painting is a forgery based on the composition of the blue (Cobalt Blue) pigment. The painting is a forgery based on the composition of BOTH the white (Lead White) and blue (Cobalt Blue) pigments. The painting could be authentic based on the composition of the white (Lead White) and blue (Cobalt Blue) pigments. The painting is a forgery based on the composition of the white (Lead White) pigment.