Consider the following statements regarding centromere and choose the correct answer:
1. The position of the centromere is constant for a particular chromosome
2. The structure and function of the centromere are different from that of the rest of the chromosome
3. During division the centromere is functional, while the rest of the chromosome is genetically inactive
4. The position of the centromere varies in different chromosomes

A. Only 1 is true

B. Only 1 and 2 are true

C. Only 1, 2 and 3 are true

D. 1, 2, 3 and 4 are true

Answer: Option D