For an increasing and continuous function f defined on the set of real numbers,
$$\begin{aligned}
& f ( 0 ) = 2 \\
& f ( 1 ) = 3 \\
& f ( 2 ) = 4
\end{aligned}$$
equalities are given.
Accordingly, the value of the integral $\int _ { 0 } ^ { 2 } f ( x ) d x$ could be which of the following?
A) 4
B) 4.5
C) 6
D) 7.5
E) 8