JEE Main 2023 Mathematics question

For a triangle ABC, the value of cos2A + cos2B + cos2C is least. If its inradius is 3 and incentre is M, then which of the following is NOT correct?

• (A)
• (B)perimeter of ABC is
• (C)area of ABC is Correct
• (D)sin2A + sin2B + sin2C = sinA + sinB + sinC