All functions begin with a(n) ________ sign

OpenOffice Writer's Mail Merge feature can be used to create mailing labels, print envelopes,

and personalize letters and other documents. Indicate whether the statement is true or false

Consider the following statements:struct studentType1  {  string name;  int ID;  double gpa;  };studentType1 student1, student2;struct studentType2  {  string name;  int ID;  double gpa; };studentType2 student3, student4;Which of the following statements is valid in C++?

A. student2 = student3; B. student1 = student4; C. student2.ID = ID; D. student1.ID = student3.ID;