WILL GIVE BRAINLIEST LIKE FIVE STARS THE WHOLE SHEBANG; The graph shows how many bottles a machine caps in a certain number of seconds.

Part A
What is the constant of proportionality, and what does it mean in this situation?
Use the drop-down menus to show and explain your answer.
The constant of proportionality is
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; the machine caps
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bottles in
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.

Part B
Which of the following is an ordered pair on the graph? What does it represent in this situation?
A.

(45, 90); the machine caps 45 bottles in 90 seconds.
B.

(45, 900); the machine caps 45 bottles in 900 seconds.
C.

(45, 900); the machine caps 900 bottles in 45 seconds.
D.

(900, 45); the machine caps 900 bottles in 45 seconds.