Let $\mathrm{U}$ Be the Smallest Possible Universal Set That Includes All of All

Multiple Choice

Let $\mathrm{U}$ be the smallest possible universal set that includes all of the crops listed; and let $\mathrm{A}, \mathrm{K}$ , and $\mathrm{L}$ be the sets of five crops in Alabama, Arkansas, and Louisiana, respectively. Find the indicated set.
- $\mathrm{A}^{\prime} \cap \mathrm{K}^{\prime}$

A) $\{n\}$
B) $\{\mathrm{c}, \mathrm{p}, \mathrm{r}, \mathrm{t}\}$
C) $\{\mathrm{c}, \mathrm{n}, \mathrm{p}, \mathrm{r}, \mathrm{t}\}$
D) $\varnothing$