This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Medicine
A patient presents with 12 hours following a myocardial infraction . Test of choice 
Select and explain. 
A. Lactate dehydrogenase, B. Cardiac troponins, C. Creatinine phosphokinase, D. Myoglobin
B: Cardiac troponins
Answer: B: Cardiac troponins 
Explanation: Ref Harrison 19 th ed pg 1594 In addition to the clinical examination, three major noninvasive tools are used in the evaluation of NSTEMI-ACS: the electrocardiogram (ECG), cardiac biomarkers, and stress testing. CCTA is an additional emerging option (Fig. 294-2). The goals are to: (1) recognize or exclude myocardial infarction (MI) using cardiac biomarkers, preferably cTn;