Which type of angina is precipitated by physical exertion and is relieved by rest?

A. Unstable: Unstable angina occurs at rest or with minimal exertion and/or is new or worsening; it is not reliably relieved by rest. B. Chronic stable: Chronic (stable) angina is typically precipitated by physical exertion or emotional stress and is relieved by rest or nitroglycerin. C. Variant: Variant (Prinzmetal) angina is caused by coronary artery spasm, often occurs at rest (including at night), and is not characteristically provoked by exertion. D. Nocturnal: Nocturnal angina refers to chest pain occurring at night while lying down; it’s not specifically precipitated by exertion and relieved by rest in the same way as stable angina.