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

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.
- $A \cap K$

A) $\{c, p, r, t\}$
B) $\{c, h, p, r, s, t, w\}$
C) $\{h, s, w\}$
D) $\{\mathrm{c}, \mathrm{h}, \mathrm{s}, \mathrm{t}, \mathrm{w}\}$