How does the graph of g(x) = 4[x] differ from the graph of f(x) = [x]? O Multiplying by 4 shifts the graph of g (x)=4[x] up 4 units

O Multiplying by 4 shifts the graph of g(x) = 4[x] right 4 units

O Multiplying by 4 stretches the graph of g(x) = 4[x]vertically by a factor of 4. .

O Multiplying by 4 shifts the graph of g(x) = 4[x] down 4 units