Which two sentences describe effects of the agricultural revolution in britain?

a. the central areas of major cities became poorer as the urban rich migrated to rural areas.
b. the major industrial cities became overcrowded as workers from rural areas moved there.
c. urban businessmen purchased farms throughout the country and built mines and factories on them.
d. as the ease of traveling across the country increased, the differences between rural and urban areas decreased.
e. because of the steady increase in food production, the population nearly doubled between 1800 and 1850.