brain game

basic brain training game, which will be asking the user to calculate the answer to various simple arithmetic expressions. . When the application starts, it presents the user 4 buttons labelled New Game, Continue, About and Exit. (7 marks) 2. Clicking on the About button, it should present the user with a popup window which describes the rules of the game (it is left up to you to determine the appropriate text of the rules displayed, by looking at the subquestions below). 3. Clicking on the Exit button should terminate the application. 4. Clicking on the Continue button, a previously started game is resumed. The game resumes from exactly the same point that it was left before, i.e. the implementation needs to restore the exact previous state of the game. For this, in order to work, the user should be asked whether he would like to save the current game when he clicks on the Exit button. Next time the application starts and the user clicks on the Continue button, the state of the last game saved should be restored. 5. Clicking on the New Game button, starts a new game for the user. The user is presented with four levels of game difficulty, Novice, Easy, Medium, Guru. Clicking on each one of them sets the maximum number of terms involved in the arithmetic expression that the user needs to calculate (see the next subquestion). The Novice level corresponds to an arithmetic expression involving exactly 2 integers. The Easy level corresponds to an arithmetic expression with maximum 3 terms, i.e. it can contain 2 or 3 integers. The Medium level corresponds to an arithmetic expression with maximum 4 terms, i.e. it can contain 2, 3, or 4 integers. The Guru level corresponds to an arithmetic expression with maximum 6 terms and minimum 4 terms, i.e. it can contain 4, 5 or 6 integers.