Which sentence illustrates apostrophes correctly.

When writing out the POs, please be sure to dot your i's and cross your t's.

Mr. and Mrs. Winston P. Oglethorp III cordially invite you to an hors d' ouvre reception at five o clock in the vening on the tenth of June.

The old man recollected, "Youngster, 29' was a miserable year."

That hospital's RNs uniforms are dark green.