What is the output of the given code?

Ans=Ruby
    puts "#{Ans} is an oop language"
    puts "It is very efficient langauge"
    puts "#{expr} is used on rails platform"

A. // B. # C. -- D. /* */

A. + B. . C. : D. <<

A. Prints to console B. Converts to string C. Finds the length D. Reads input from user

A. function B. define C. method D. def