Consider the following statements:struct studentlypelstring name;int ID;float gpa,struct student lype$2$string name, int ID$,$Toat gpa,studentlypel student, student$2$; student Type$2$ student$3,$ student$4$;Which of the following statements is valid in CH$+?.$student$2=$ student$3$;$0$ b$.$studentl $=$ student$4$;$0.$student$2\mathrm{.}1$D $=1$D;student$1.$ID $=$ student$3.$ID;