15. One of the gates of the port authority of one of the ports in the UAE is concerned with sorting out incoming truck traffic based on their weight to avoid damaging internal port roads and reduce the cost of reinforcing all the roads. All incoming truck's weight will be automatically measured as they are driving towards the gate. A truck detector is turned on when a truck is approaching. This truck detector will enable the measurement of the weight Three levels of weight are used to sort out the trucks: Light, Medium and Heavy The entry gate has three automatically operated doors corresponding to the three levels of weight. Before the road splits into 3 lanes, a display informs the driver what lane he should enter into. A display is used to inform the driver which lane he should follow A. B. C. D. The left lane is for light trucks - The middle lane is for medium truck:s The right lane is for the heavy trucks A microcontroller is used to implement the logic controlling the entry to the port. Draw a flowchart to describe the logic of operating the doors and the display. Neat and well labeled diagram is required for full grade b. Referring to question 15, Write instructions to: i. Load the Data 1 and Data 2 in to Port B and Port D ii. Add these two bytes and iii. Send the SUM to Port C