You are required to develop a simple app in C that authenticates user using password and user name. If user name is admin and password is user$1$ the user can login and enter registration number $,$name of student and scores in assignment $1,$ assignment $2,$ assignment $3,$ continuous assessment test $1($ CAT$1),$ continuous assessment test $2($ CAT$2)$ and final written examination that are graded out of $5,5,10,15,15$ and $50$ respectively. The maximum total score should be $100.$ The app will then generate grades using the criteria below: Score From $0$ to $39$ Grade E From $40$ to $49$ From $50$ to $59$ D C From $60$ to $69$ From $70$ to $100$ B A The student registration number, name $,$ scores and grades are then send to some text file$($backend$)$ clearly showing the date$/$time the record was posted.