Determine Whether the Relation Defines $y$ As a Function Of $x$ Give the Domain

Multiple Choice

Determine whether the relation defines $y$ as a function of $x$ . Give the domain.
- $y=\sqrt{3 x-5}$

A) Function; domain: $(-\infty, \infty)$
B) Not a function; domain: $\left[\frac{5}{3}, \infty\right)$
C) Not a function; domain: $\left(-\infty, \frac{5}{3}\right]$
D) Function; domain: $\left[\frac{5}{3}, \infty\right)$