whiCh stAtEmEnt Do thE rEsEArChErs think is wrong
A．thEy know how A tumor is DEvElopED.
B．thEy know how A nEw tumor is sEEDED in thE BoDy.
C．thEy know how thE FEmAlE hormonE EstrogEn mAkEs BrEAst CAnCEr CElls grow.
D．thEy know BrEAst CAnCEr is A DEAth sEntEnCE to womEn.