[Solved] How can you modify this Ruby class to keep track of how many objects have... How can you modify this Ruby class to keep track of how many objects have been created using class instance variables? | Ruby

Ruby - Class Methods and Variables

How can you modify this Ruby class to keep track of how many objects have been created using class instance variables?

class Bird
  def initialize
    # increment count here
  end

  def self.count
    @count
  end
end

A

Add <code>@count = 0</code> outside methods and increment <code>@count</code> inside a class method called from initialize

BUse <code>@@count</code> variable and increment it inside initialize

CDefine <code>@count</code> inside initialize and increment it

DAdd <code>self.count += 1</code> inside initialize

Step-by-Step Solution

Solution:

Step 1: Initialize class instance variable
Define @count = 0 inside the class but outside methods to store count.
Step 2: Increment count via class method
Create a class method to increment @count and call it inside initialize to update count on each new object.
Final Answer:
Add @count = 0 outside methods and increment @count inside a class method called from initialize -> Option A
Quick Check:
Class instance var + class method increment = object count [OK]

Quick Trick: Use class method to update class instance variable from initialize [OK]

Common Mistakes:

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How can you modify this Ruby class to keep track of how many objects have been created using class instance variables?