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
A 7 year old child with rheumatic heart disease presents with pallor, fever and a palpable spleen. The following investigations would be needed to arrive at a diagnosis except – 
Select and explain. 
A. Electrocardiogram, B. Echocardiogram, C. Blood culture, D. Urine examination
A: Electrocardiogram
Answer: A: Electrocardiogram 
Explanation: None