This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
Which of the following cannot be done by 3 years old child - 
Select and explain. 
A. Draw a triangle, B. Draw a circle, C. Can arrange 9 cubes, D. Can go, up and down
A: Draw a triangle
Answer: A: Draw a triangle 
Explanation: Ans. is 'a' i.e., Draws a triangle o A child can draw a triangle by 5 years. o A child can draw a circle by 3 years. o A child can make a tower of 9 cubes by 30 months. o A child can go up and downstairs with one step at a time by 2 years. o A child can stand momentarily on one foot by 3 years