This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Pediatrics
In developmental milestones of children, first draws 
Select and explain. 
A. Zero, B. Triangle, C. Quadrangle, D. Rectangle
A: Zero
Answer: A: Zero 
Explanation: (A) Zero > Scribbling on paper with a crayon or pencil. The child scribbles spontaneously by 12-24 months, copies arid draws a horizontal or vertical line at 2 years; a circle by 3 years, a cross (plus sign) by 4 years and tilted cross (multiplication sign) by 5 years. He can draw a rectangle by the age of 4 years and a triangle by 5 years.