PLEASE I NEED HELP How did Louis Daguerre create his innovative daguerreotypes?

A) Daguerre treated a negative so that it produced a shallow depth of field.

B) Daguerre exposed a negative for a full day to capture intense light and shadow.

C) Daguerre projected an image onto a metal plate that was then etched by using fine lines.

D) Daguerre captured a permanent image with rich tonal variations and fine detail.