Consider the following statements regarding the mechanical and optical properties of Diamond and Graphene: 1. Diamond is isotropic in its mechanical properties, whereas Graphene exhibits highly anisotropic mechanical behavior. 2. Graphene is almost completely transparent, absorbing only about 2.3% of incident white light despite being a single atom thick. 3. Diamond has a high refractive index of approximately 2.42, which causes total internal reflection and gives it its characteristic brilliance. Which of the statements given above are correct?

Options:

• A: 1 and 2 only
• B: 2 and 3 only
• C: 1, 2 and 3
• D: 1 and 3 only

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