Use the following function template declaration and variable definitions to deduce the template type parameter T for each of the subsequent expressions involving calls to function foo. If template type deduction fails, choose as your answer.

template<typename T>
void foo(T);
int       x{100};
const int cx{x};
int       &rx{x}; 
int const &crx{x};
int       *pi{&x};
int       a[10]{10};
int const ca[10]{10,20};
int       b[2][10]{};