what do you write to indicate that a tweet from table "tweets" only belongs to one zombie? (from table "zombies")? a) class Tweet validates_presence_of :status end

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Question:what do you write to indicate that a tweet from table "tweets" only belongs to one zombie? (from table "zombies")? a) class Tweet validates_presence_of :status end

1.class Tweet validates_presence_of :status end

2.class Zombie < ActiveRecord::Base has_many :tweets end

3.class Tweet < ActiveRecord::Base belongs_to :zombie end

4.class TweetsController < ApplicationController ...

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  1. what do you write to indicate that a tweet from table "tweets" only belongs to one zombie? (from table "zombies")? a) class Tweet validates_presence_of :status end
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