Choose the sentence that has a parallelism ERROR.

I remember entering the stark canyon in North Dakota, searching the rubble by day, sleeping in a

tent by night, and at last discovering dinosaur bones.

I remember when I entered the stark canyon in North Dakota, searched the rubble by day, slept in

a tent by night, and at last discovered dinosaur bones.

I remember entering the stark canyon in North Dakota, searching the rubble by day, sleeping in a

tent by night, and at last to discover dinosaur bones.

I planned to enter the stark canyon in North Dakota, search the rubble by day, sleep in a tent by

night, and discover dinosaur bones.