Volatility of diesel fuel oil is_________________?

A. minimum temperature to which oil is heated in order to give off inflammable vapours in sufficient quantity to ignite momentarily when brought in contact with a flame

B. temperature at which it flows easily

C. temperature at which it solidifies or congeals

D. it catches fire without external aid

E. indicated by 90% distillation temperature, i.e., when 90% of sample oil has distilled off

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