Which two sentences in this the expert from the time machine by H.G Wells suggest that the morlocks posses a degree of intelligence comparable to that of humans?

A) within was a small apartment and on a raised place in the corner of this was the time machine

B) for once, at least, I grasped the mental operation of the morlocks

C) I was surprised to find it had been carefully oiled and cleaned

D) now as I stood and examined it, finding a pleasure in the mere touch of the contrivance, the thing I have expected happened.

E) I could already hear their murmuring laugher as they came towards me.

F) The matches were of that abominable kind that light only on the box.