A 51-year-old male with a history of chest pain with exertion presents with retrosternal chest pressure that radiates to the neck. He has nausea and diaphoresis while at rest. The patient has ST segment elevation on the ECG. What is the most likely diagnosis?
a) Myocardial infarction
b) Angina pectoris
c) Aortic dissection
d) Pulmonary embolism