runtime analysis question c++ explain please

Consider our CSEVector class from lecture. Assume I have created an instance of CSEVector named vector and inserted n integers into vector, for some n>0. a. Let foo be the following function: bool foo (const CSEVector& in) {if(in.sizeQ > 0 && in[0] % 2 == 0) {return true;} return false;} What is the runtime of calling foo(vector); ? b. Now suppose I created a copy of the function foo without const or reference qualifiers, creating a new function foobar: bool foobar (CSEVector in) {if(in.size() > 0 && in[0] % 2 == 0) {return true;} return false;} Does the runtime for foobar (vector); differ? Explain or why not. If changed, provide analysis for the new runtime