Let f(x)=⌊x⌋f(x) = \lfloor x \rfloorf(x)=⌊x⌋ and g(x)=xg(x) = \sqrt{x}g(x)=x. What is the range of (f∘g)(x)(f \circ g)(x)(f∘g)(x) for x∈[0,4]x \in [0, 4]x∈[0,4]?
{0, 1, 2}
{0, 1}
[0, 2]
{0, 1, 2, 3}