Cassie opens a bank account with two dollars. She adds four dollars on Day 1, eight dollars on Day 2, and sixteen dollars on Day 3. She continues this pattern for 15 days. Which statement describes why this sequence is a function. Select each correct answer
.A The graph of this sequence would pass the horizontal line test.
B The graph of this sequence would pass the vertical line test.
CEach amount of dollars corresponds to a unique day in this sequence.
DNone of the above.