Stars with masses between 0.4-Mo and 4-Mo
a. undergo thermonuclear fusion of hydrogen and helium, but never get hot enough to ignite carbon.
b. undergo thermonuclear fusion of hydrogen, but never get hot enough to ignite helium.
c. produce type I supernovae after they exhaust their nuclear fuels.
d. produce type II supernovae after they exhaust their nuclear fuels.
e. undergo carbon detonation.
a
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