<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A group of investigators is studying a drug to treat refractory angina pectoris. This drug works by selectively inhibiting the late influx of sodium ions into cardiac myocytes. At high doses, the drug also partially inhibits the degradation of fatty acids. Which of the following is the most likely effect of this drug?? A: Increased oxygen efficiency, B: Increased prolactin release, C: Decreased uric acid excretion, D: Decreased insulin release, E: Decreased serum pH,  <response>: This is a question about the mechanisms and effects of a hypothetical new drug for treating refractory angina pectoris. The drug works by inhibiting late sodium influx into cardiac myocytes, which would decrease action potential duration and contractility in the heart. At high doses it also inhibits fatty acid degradation. Choice A about increased oxygen efficiency seems reasonable since decreasing contractility could improve cardiac efficiency. Choice B about increased prolactin release is unrelated. Choice C about decreased uric acid excretion is unrelated. Choice D about decreased insulin release is plausible since fatty acids normally stimulate insulin release, so inhibiting their degradation could decrease insulin release. Choice E about decreased serum pH is unrelated.A: Increased oxygen efficiency 