Answer:
B
Step-by-step explanation:
"With Giustiniani's Genoese troops retreating into the city and towards the harbour, Constantine and his men, now left to their own devices, continued to hold their ground against the Janissaries. Constantine's men eventually could not prevent the Ottomans from entering the city and the defenders were overwhelmed at several points along the wall. When Turkish flags were seen flying above the Kerkoporta, a small postern gate that was left open, panic ensued and the defence collapsed. "