Which statement correctly explains the Gram stain reaction of archaeal cells?
A)They are Gram-positive due to the pseudomurein layer in their cell walls. B)They are Gram-negative due to the lack of peptdoglycan in their cell walls. C)They don't stain - basic dyes used in the Gram stain don't adhere to archaeal cells. D)Some are Gram-positive and some are Gram-negative due to the diverse chemical structure.