Please help me with this MRCP-2 Pastest Question

A 74-year-old man with a history of ischaemic heart disease (HD) presents to the Emergency Department (ED) at 5 am with acute shortness of breath. The paramedics recorded oxygen saturations of 90% on air when they initially attended him at home. His current medications include ramipril 10 mg, bisoprolol 5 mg, aspirin 75 mg, atorvastatin 10 mg and furosemide 40 mg. On examination, his blood pressure (BP) is 165/100 mmHg, while his pulse is 100 beats per minute (bpm) and regular. He has crackles consistent with left ventricular failure (LVF) throughout both lung fields. Bloods available from two weeks earlier show a creatinine level of 150 umol/l. Investigations and venous blood gases reveal the following: Investigation Result Normal values Haemoglobin (Hb) 132 g/l 135-175 g/l Sodium (Na+) 137 mmol/l 135-145 mmol/l Potassium (K*) 5.0 mmol/l 3.5-5.0 mmol/l Urea 9.2 mmol/l 2.5-6.5 mmol/l pH 7.35 7.35-7.45 Bicarbonate (HCO 3-) 22 mmol/l 22-29 mmol/l An electrocardiogram (ECG) reveals sinus tachycardia and lateral ST depression. Oxygen therapy has been commenced by ambulance staff. Which of the following is the most appropriate next intervention?

A IV dobutamine
B IV furosemide
C Continuous positive airway pressure (CPAP)
D IV nitrate
E IV diamorphine

The correct answer is: Furosemide

I know it makes sense from the pulmonary edema point of view but what I fail to realize why not nitrates? The patient has lateral st depression so wouldn't nitrates (part of MONA) make more sense in this case?