问题：
[单选题]
Given a MAX 3-SAT formula Φ with k clauses, we show that the expected number of clauses satisfied by a random assignment is 7k/8. Consider a random assignment for formula Φ∧Φ¯, the expected number of clauses satisfied is _____.
A7k/16
B7k/8
C7k/4
D7k/2
