Which choice does not contain errors in how it is written?

A) On a sunny day, you'll find me swinging on the hammock, picnicking with friends, and hiking through the mountains.
B) On a sunny day, you'll find me to swing on the hammock, picnicking with friends, and hiking through the mountains.
C) On a sunny day, you'll find me swinging on the hammock, at a picnic with friends, and hiking through the mountains.
D) On a sunny day, you'll find me swinging on the hammock, picnicking with friends, and we will hike through the mountains.