Which TWO sentences have correct usage of pronouns and possessives?

Aunt Jane's cat ate her flowers, and they died.

We saw a movie about several U.S. Marines’ boot camp experiences.

Neither Sam nor Henry had their hair cut recently.

The participants were cutting their hair and they was short.

The car had lost its bumper in Cassius’ accident.

Aunt Jane's cat ate her flowers, and they died.

The car had lost its bumper in Cassius’ accident.