One of the food industry companies wants to establish a new production line. The production line consists of 3 parts. The first part has 40 analog sensors and 50 actuators with relay triggered. The second part has 30 analog sensors, 30 digital sensors, 20 actuators with relay triggered, 10 analog output ports, and 12 digital output ports. The third part has 20 analog sensors, 20 digital sensors, 20 analog output ports, and 20 digital output ports. Q1: How many PLCs do you need to purchase to design the new production line? Find suitable brands and models with minimum cost. Q2: How many PLC extension modules do you need to purchase? Please write extension modules' specifications. Find suitable brands and models with minimum cost. Q3: Please write your estimated budget.