Isabella wants to amuse dragons and unicorns by giving them joke books. She wants to amuse a total of at least 141414 dragons and unicorns (condition AAA), with 108108108 joke books at most (condition BBB). The graph represents the constraints on the number of dragons DDD and unicorns UUU Isabella amuses.

Isabella amuses 222 dragons. How many unicorns can she amuse to meet both her constraints?
Choose 1
Choose 1

(Choice A)
A
At least 141414 unicorns and at most 181818 unicorns.

(Choice B)
B
At least 121212 unicorns and at most 151515 unicorns.

(Choice C)
C
Exactly 151515 unicorns.

(Choice D)
D
Isabella doesn't have enough joke books left to amuse any unicorns.
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