Direction: Consider the following statements and choose the correct option. A. Abstract nouns are invisible verbs. B. Proper nouns are always written with a capital letter at the beginning. C. Material noun denotes the quality, state, or action of an object. D. Proper nouns are sometimes used as common nouns.

• A. A and B are correct                 
• B. B and D are correct
• C. C and D are correct                 
• D. A and C are correct