A 3-D pie chart is a three-dimensional disk divided into wedges that resemble pieces of a pie

If you want to make a function a template function, you must precede the function declaration and definition with

a. template b. template c. template d. template

Given the following template function definition, which of the following is not a valid invocation of the function?

template void swap(T& left, T& right) { //implementation goes here, not relevant to the question } int int1, int2; float flt1, flt2; char ch1, ch2; string s1, s2; a. swap(s1,s2); b. swap(int1, int2); c. swap(ch1, ch2); d. swap(int1, ch2);