Which of the Following Statements Is True of the Trichromatic

question 103

Multiple Choice

Which of the following statements is true of the trichromatic theory proposed by Hermann von Helmholtz?

• A)It states that there are four types of cones present in the human visual system.
• B)It states that there are three types of rods present in the human visual system.
• C)It is based on experiments that show that cells in the visual system respond to red-green and blue-yellow colors.
• D)It is based on experiments that show that any color in the spectrum can be matched by combining three other wavelengths.