The tone of the letter as a whole is best described as _________.

A．it would be better for their boys. to receive some schooling
B．they were being insulted by the offer
C．they knew more about science than the officials
D．they had a better way of educating young men

A．young women should also be educated
B．they had different goals of education
C．they taught different branches of science
D．they should teach the sons of the officials first