## **Core Concept**
Myelodysplastic syndromes (MDS) are a group of disorders caused by poorly formed or dysfunctional blood cells, typically leading to various forms of anemia. They are often considered pre-leukemic states. MDS is more common in older adults.

## **Why the Correct Answer is Right**
The correct answer, **C. > 60 years**, is right because MDS incidence increases significantly with age, particularly after the age of 60. The majority of MDS patients are diagnosed at an age above 60 years, reflecting the accumulation of genetic mutations over time and age-related declines in bone marrow function.

## **Why Each Wrong Option is Incorrect**
- **Option A: 60 years**