When the following Python code is executed, what will be the output?

order_details = {}

order_details['quantity'] = 1

order_details['item_no'] = 1124

order_details['quantity'] = 2

print(order_details)

a) {'quantity': 2, 'item_no': 1124}

b) {'item_no': 1124, 'quantity': 2}

c) {'quantity': 1,'item_no': 1124,'quantity': 2}

d) Either 1) or 2) is possible.