Which points are included in the graph of the ceiling function f(x) = ⌈x⌉? Select all that apply.
A. (−0.5, −1)
B. (−1.5, −2)
C. (−3.5, −3)
D. (−3.5, −4)
E. (3.001, 4)
F. (−3.001, −3)