This passage, from the Anglo-Saxon Chronicle, tells about a Viking raid on the English region known as East Anglia.

1010. After Easter this year the Viking army we spoke of before came to East Anglia. They landed at Ipswich and marched straight to where they had heard [the lord] was with his local forces . . . And the East Anglians ran off at once . . . The Danes held the battlefield. Then they got horses and afterwards took control of East Anglia, and plundered and burned the countryside for four months - they even went as far as the wild fens and killed men and beasts and set fires throughout the fens, and burned down Thetford and Cambridge and then turned south to the Thames . . . Then they turned back to their ships with their plunder. As they were going to their ships, the English army should have come back into the field to prevent them turning inland again. And that's when the English army went home . . . [A]ll the council was summoned to the king to determine how to defend the realm. But whatever was decided on did not last even a month. In the end, there was no leading man who was prepared to call up his forces. Everyone ran off and did the best he could.

Why were the English unsuccessful in launching an attack against the Vikings?

They did not have enough weapons to attack.
They were too outnumbered to defend themselves.
They could not agree on how to best defend the region.
They decided to negotiate instead.