please answer as soon as possible using python as the programming language and explain what is being done

Link to the Oregon Trail: https://archive.org/details/msdos_Oregon_Trail_The_1990

also been included in the second photo

Exercise A:

Exercise B:

For this exercise you will design and implement a program that will receive numerical grades as user input, and then determine the letter grade that should be assigned. The conversion from numerical to letter grades is detailed in the table below (and note that the lower limit of each range is "inclusive", so a 90.0, for example, should receive letter grade "A+", and not letter grade "A"): In order to complete this task, you will need to: - review the "Assessment Scheme" section of your official course outline - assume that the grade ranges are inclusive (e.g., numerical grade 90 results in letter grade A+ ) Your submission for this exercise: - must ask the user for the overall grade received for tutorials, quizzes, assignments, and final - must be a source code file with filename ' 'comp1405_w23_\#\#\#\#\#\#\#\#\#_tutorial_03_a.py' For this exercise you will design and implement a simple menu inspired by the "General Store" encountered at the beginning of the educational game "The Oregon Trail". Players would select a profession (banker, carpenter, or farmer) for an initial balance of money, and then specify how many pounds of food or oxen to purchase before the game begins. In order to complete this task, you will need to: - observe how the menu was implemented in "The Oregon Trail"2 - decide on the professions and supplies you wish to support Your submission for this exercise: - must be a source code file with filename 'comp1405_w23_\#\#\#\#\#\#\#\#\#_tutorial_03_b.py' - must allow the user to select from three professions (each providing a different initial balance) - must allow the user to select the desired quantity of at least three different supplies - must print out the amount of money remaining after the desired purchases are made 1 You must replace the number signs in the filename with your official nine-digit student identification number