PASCAL 2021 Problem 19

A group of friends are sharing a bag of candy.
On the first day, they eat \frac{1}{2} of the candies in the bag.
On the second day, they eat \frac{2}{3} of the remaining candies.
On the third day, they eat \frac{3}{4} of the remaining candies.
On the fourth day, they eat \frac{4}{5} of the remaining candies.
On the fifth day, they eat \frac{5}{6} of the remaining candies.
At the end of the fifth day, there is 1 candy remaining in the bag.
How many candies were in the bag before the first day?

Answer Choices
A. 512
B. 720
C. 1024
D. 1440
E. 2048