$\backslash$table$[[9\mathrm{.}99,8\mathrm{.}86,7,7,62],[9\mathrm{.}00,8\mathrm{.}00,8,8,64],[8\mathrm{.}00,7\mathrm{.}00,9,9,67],[7\mathrm{.}10,6\mathrm{.}10,10,10,72],[6\mathrm{.}00,5\mathrm{.}00,11,11,79],[5\mathrm{.}15,4\mathrm{.}15,12,12,86]]$

Suppose that entry into the industry changes this firm's demand schedule from columns $(1)$ and $(3)$ to columns $(2)$ and $(3).$ Economic profit will

decline to about zero.

fall by $$10.$

increase by $$10.$

fall to $$6.$