You are tasked with developing a system that manages and monitors academic records for students at a university. The system should handle creating records, updating them, saving to and reading from a file.

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$3\mathrm{.}1$Your project manager has tasked you to implement the following requirements:

$$ Create a StudentRecord class, with the following properties and method:

$-$ StudentID: Unique identifier for each student.

$-$ Name: Student's name.

$-$ CourseGrades: List of CourseGrade objects where each object contains a course name and its corresponding grade.

$-$ UpdateGrade$($string course, double newGrade$)$: Updates the grade for a specific course.

$$ Define a RecordsManager class with the following properties and methods:

$-$ RecordsFilePath: The path to the file storing academic records.

$-$ StudentRecords: A list of StudentRecord instances.

$-$ LoadRecords$()$: Reads the records from a file using StreamReader.

$-$ SaveRecords$()$: Writes the records to a file using StreamWriter.

$-$ FindRecord$($string studentID$)$: Retrieves a student's record by ID$.$

$-$ UpdateRecord$($string studentID, string course, double newGrade$)$: Updates a student's grade for a specific course.

$[25]$

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