What Does DWPD (Drive Writes Per Day) for an SSD

What does DWPD (drive writes per day) for an SSD indicate?

A) the maximum number of 4K host writes to the entire drive capacity of the SSD per day over a three-year period
B) the maximum number of erase operations to the entire drive capacity of the SSD per day over a three-year period
C) the maximum number of 4K host writes to the entire drive capacity of the SSD per day over a five-year period
D) the maximum number of drive rewrite cycles (erase and write) for the SSD over a five-year period