A nonprofit organization can process a donation without knowing the donor's gender or age, but a data mining application that looks at differences in donation behaviours based on gender would be impaired. This data problem is known as

Question $1$Select one:

A$.$

too coarse data.

B$.$

missing values.

C$.$

too fine data.

D$.$

incomplete or inaccurate data.

E$.$

inconsistent data.