c++

In the statement: "class Test{ int k; }; int main() { Test::k = 99.5;)" Select one: O a.k needs an object O b. Wrong data type for k; c. All answers are correct O d.k is inaccessible Non-void, functions that return reference and have a const at the start of their declaration: Select one: a. Can only be called by ref O b. Cannot be the target of a variable/object assignment O c. Cannot be on the left of an equal sign O d. Can only be called by val A pointer to the base class can be used to store Select one: O a. only derived class object b. All Answers are Correct O conly base class object O d. base class object as well as derived class object