Salesforce Exam Questions

Which of the following code will u use to instantiate a map called numbers that has integers as keys

Which of the following code will u use to instantiate a map called numbers that has integers as
keys and strings as values?
Map<SLrng, :nLeger> numbers = new Map<String, Integer>;
Map<ThLeyer, SLring> numbers = new Map<Integer, String>;
Map<nLeger> numbers = new Map<String>;
Map<Slring> numbers = new Map<Integer>;

A.
Map<Integer, String> numbers = new Map<Integer, String>;

B.
Code contained in a trigger

C.
Failure response settings

D.
Manual sharing, apex sharing