How can the current directory and its subdirectories be searched for the file named MyFile.xml?

How can the current directory and its subdirectories be searched for the file named
MyFile.xml?

A.
find . -name MyFile.xml

B.
grep MyFile.xml | find

C.
grep -r MyFile.xml

D.
less MyFile.xml

E.
search Myfile.xml ./

Explanation: