Which of the following allows you to save a single attr…

Which of the following allows you to save a single attribute value on an EAV entity?

A.
$model->saveAttribute($attributeCode);

B.
$model->save(SattributeCode);

C.
$model->getResource()->saveAttribute($model, SattributeCode);

D.
$model->getResource()->save($model, $attributeCode);