Light intensity is generally described in terms of __________ and measured in _________. ∙ A. Luminous flux density; Lumens per unit area
∙ B. Luminous flux intensity; Lumens per unit area
∙ C. Luminous flux density; Lumens per unit volume
∙ D. Luminous flux intensity; Lumens per unit volume
∙ B. Luminous flux intensity; Lumens per unit area
∙ C. Luminous flux density; Lumens per unit volume
∙ D. Luminous flux intensity; Lumens per unit volume