The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 6 years old child with development delay, can ride a tricycle, can climb upstairs with alternate feet, but downstairs with 2 feet per step, can tell his name, known his own sex, but cannot narrate a story. What is his development age?   (A) 3 years   (B) 4 years   (C) 5 years   (D) 2 years
['(A) 3 years <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) 3 years \n (B) 4 years \n (C) 5 years \n (D) 2 years <> possible answers', '  A 6 years old child with development delay, can ride a tricycle, can climb upstairs with alternate feet, but downstairs with 2 feet per step, can tell his name, known his own sex, but cannot narrate a story. What is his development age? <> context@']