king alfred

[daretodream]

Just because King Alfred occupied and fortified London in 886 did not mean that he also won the loyalty of its citizens: the invading Danes were well aware of this weakness and used it to their advantage in 893.
(A) Just because King Alfred occupied and fortified London in 886 did not mean that he
(B) The fact that King Alfred had occupied and fortified London in 886 did not mean that he had
(C) Just because King Alfred occupied and fortified London in 886, it did not mean he
(D) The fact that King Alfred occupied and fortified London in 886, it did not mean that he
(E) Just because King Alfred had occupied and fortified London in 886, it did not mean he

[komal]

Just because King Alfred occupied and fortified London in 886 did not mean that he also won the loyalty of its citizens: the invading Danes were well aware of this weakness and used it to their advantage in 893.
(A) Just because King Alfred occupied and fortified London in 886 did not mean that he
(B) The fact that King Alfred had occupied and fortified London in 886 did not mean that he had
(C) Just because King Alfred occupied and fortified London in 886, it did not mean he
(D) The fact that King Alfred occupied and fortified London in 886, it did not mean that he
(E) Just because King Alfred had occupied and fortified London in 886, it did not mean he

'C','D' and 'E' are out because 'it' has no antecedent.

Since the king occupied and fortified London before the other incident in 1983, we need to use past perfect tense. So 'A' is wrong.

The fortification and winning of heart had happened before the Danes invasion in 893, therefore we should use past perfect. Hence 'B' is correct.

[thephoenix]

A clause starting with "Just becasue" and acting as a subject of the sentence is not accepted in formal english. So A is out.
C,D and E are out because "it" can not refer to the sentence or clauses.

Hence its B.