An interim dean needs help from three assistant deans after the dean and associate dean were transferred back to full$-$time faculty. The estimated time for each assistant dean to do each task is given in the matrix below.

$$ Assessment Budget Curriculum Development

Assistant $144544245$

Assistant $248506447$

Assistant $346566472$

Which of the following constraints represents the assignment for assistant dean $2?$

Group of answer choices

X$2$A $+$ X$2$B $+$ X$2$C $+$ X$2$D $<=1$

X$2$A $+$ X$2$B $+$ X$2$C $+$ X$2$D $=0$

X$2$A $+$ X$2$B $+$ X$2$C $+$ X$2$D $=1$

X$2$A $+$ X$2$B $+$ X$2$C $+$ X$2$D $>=0$