Which set of ordered pairs represents y as a function of x?
A. {(2, 3), (3,5), (3, -5), (-2, 8), (-2, -8)
B.{(1, 2), (2, 3), (3, 4), (3,5)}
C.{(1, 2), (2, -3), (3, 4), (4, -5)}
D.{(1,3), (1,5), (1,7), (1,9), (1, 11)}
Help me plzzz

One astronomical unit (1 au) is about 1.496 alt tag missing. kilometers. if you wrote this number of kilometers in regular decimal notation (for example, 528 and 3,459 are written in regular decimal notation), how many zeros would your number have?