Suppose the Points $x_{0}, x_{1}, \ldots, x_{n}$ Are Equally Spaced And $\alpha$

Multiple Choice

Suppose the points $x_{0}, x_{1}, \ldots, x_{n}$ are equally spaced and $\alpha$$=$$x_{0}$$<$$x_{1}$$\text { < }$ ... $<$$x_{n}$$=b$ .What is the formula (in terms of f and the $x_{i}$ 's) for the right Riemann sum approximation to $\int_{a}^{b} f(x) d x$ ?

A) $\sum_{i=a}^{b} f\left(x_{i}\right) \Delta x$
B) $\sum_{i=a+n}^{b+n} f\left(x_{i}\right) \Delta x$
C) $\sum_{i=1}^{n} f\left(x_{i}\right) \Delta x$
D) $\sum_{i=0}^{n-1} f\left(x_{i}\right) \Delta x$