SmoothTalk offers cell phone service utilizing three distribution channels. Profit, advertising cost and personal sales time data for each of the distribution channels are given below. Due to supply chain issues, the distributor for SmoothTalk can only produce 1200 units per period. Distribution Channel Profit Per Unit sold Advertising cost per unit sold Personal sales effort per unit sold. EasyTalk stores $75 $10 4 hours Mail Orders $65 $16 None Local departmental stores $89 $9 4 Hours Looking at the table, which item(s) are or could potentially be reasonable constraints for optimization consideration. Select ALL that apply. Question 16 options: Profit ($75(ET)+$65(MO)+$89(LD)) >=20000 Total sales (ET+MO+LD) <=1200 Advertising Dollars ($10*ET+$16*MO+$9*LD) <= $20,000 Personal Sales Effort (4*ET+0*MO+4*LD) <= 960