Question

how is boiling point of a liquid estimated from distillation?a) the median distillation temperature can be considered to be a good estimate of boiling pointb) the temperature at which the liquid starts to boil is considered the boiling pointc) the temperature at which the last of the liquid boils out of the boiling flask is considered to be the boiling pointd) the temperature reading when the vapor pressure above a liquid during distillation is twice that of atmospheric pressure is considered to be the boiling point