java - number of objects for garbage collection -

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दिया गया: 

  इंटरफ़ेस जानवर {शून्य मेनोओज़ (); } क्लास हॉर्स औजार पशु {लंबा वजन = 1200 एल; सार्वजनिक शून्य मेनोइज़ () {System.out.println ("व्हाइनी"); }} सार्वजनिक वर्ग आइसलैंडिक घोड़े को बढ़ाता है {सार्वजनिक void makeNoise () {System.out.println ("विनी"); } सार्वजनिक स्थिर शून्य मुख्य (स्ट्रिंग [] args) {आइसलैंडिक i1 = नया आइसलैंडिक (); आइसलैंडिक i2 = नया आइसलैंडिक (); आइसलैंडिक i3 = नया आइसलैंडिक (); I3 = i1; I1 = i2; I2 = नल; I3 = i1; // & lt; - लाइन 14}}   
 जब रेखा 14 पहुंच गई है, तो कचरा कलेक्टर के लिए कितने ऑब्जेक्ट पात्र हैं?  
 ए 0 बी 1 सी। 2 डी। 3 ई 4 एफ। 6  
 जवाब ई है क्यों?

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