Conjunctive Normal Form

Question 1
Which of the following is TRUE about formulae in Conjunctive Normal Form?
A
For any formula, there is a truth assignment for which at least half the clauses evaluate to true.
B
For any formula, there is a truth assignment for which all the clauses evaluate to true.
C
There is a formula such that for each truth assignment, at most one-fourth of the clauses evaluate to true.
D
None of the above.
       Digital Logic Design        Conjunctive Normal Form       Gate-2007
Question 1 Explanation: 
For n=2, (means two variables a and b)
Formula: a ∧ b
Truth table:

Conjunctive normal form : (a ∨ b) ∧ (a ∨ ~b) ∧ (~a ∨ b)

Similarly,
For n=1-----TRUE=1, FALSE=1 (1/2 ARE TRUE)
For n=2-----TRUE=3, FALSE=1 (3/4 ARE TRUE)
For n=3-----TRUE=7, FALSE=1 (7/8 ARE TRUE)
(1-2-n) are TRUE.
Looking at options,
There is 1 question to complete.