$7.$ Given the following code, which is the preprocessed? $//$preprocessor include using namespace std: cout $<<$ endl; $1$ C Programm A$.//$preprocessor B$.$ #include $>$ si; A$."$S$1"$ is a namespace B$."$sl$"$ is the identifier of a variable C$."$s$1"$ is variable of "cin" type D$.$ "ein" is an instance of $"$s$1"$ type E$.$ cin" is a variable of string type $9.$ Given the following code, the output is int main $/*$this is a line this is the second line $//$this is a sentence $1/$this is the second sentence$//$ cout $<<$ "this is a word A$.$ this is a line B$.$this is the second line C$.$ this is a sentence D$.$ this is the second sentence E$.$ this is a word $10.$ Which is a sample statement that can compile a C$++$ source file named "apple.cpp$"$ in a Developer Command Prompt of a Microsoft Windows computer? A$.$cl$.$exe $/$epp apple B$.$cl$.$exe apple C$.$cl$.$exe.apple.cpp D$.$cl$.$exe apple.cpp E$.$apple.cpp cl$.$exe