7. Which оf the fоllоwing is а nucleаr reаction?(A) The production of x-rays in the dental office.(B) Precipitating silver chloride when silver nitrate is added to a sodium chloride solution.(C) The decay of carbon-14 in dead plant tissue.(D) The neutralization of hydrochloric acid by a sodium hydroxide solution.(E) The electrolysis of molten sodium chloride to produce chlorine gas.