Identify which following sentence contains weak and hedging expressions:
A、Yet often it cannot have been the case that a recalcitrant trustee remained in possession of the property entrusted to him.
B、The lives they chose seem overly ascetic and self-denying to most women today.
C、There is no difficulty in explaining how a structure such as an eye or a feather contributes to survival and reproduction; the difficulty is in thinking of a series of steps by which it has arisen.
D、For example, it is possible to see that in January this person weighed 60.8 kg for eight days.
E、It is necessary for the spider to leave the branch on which it is standing, climb up the stem, and walk out along another branch.