Solve the Problem $t$ Units Are Sold $t>0$ , Is Given By $P=t^{2}-28 t+180$

Multiple Choice

Solve the problem.
-The profit made when $t$ units are sold, $t>0$ , is given by $P=t^{2}-28 t+180$ . Determine the number of units to be sold in order for $\mathrm{P}>0$ (a profit is made) .

A) $\mathrm{t}>18$ or $\mathrm{t}<10$
B) $18<\mathrm{t}<10$
C) $t=28$
D) $t=18$ or $t=10$