Given the following data definitions,

$```$

$.$ DATA

word$1$ WORD $0$FFFFh$,1,2$

$```$

what is the hexadecimal value of AX when this code executes?

mov esi, OFFSET word$1$

add esi, $4$

mov ax$,[$esi$]$

a$.1$

b$.2$

c$.$ FFFFh

d$.$ FFh