In Comparison with Self- of Trait Levels Possess

In comparison with self- of trait levels possess?
1) Don't require understanding of specific trait terms
2) More efficient measurement (i.e. ,require fewer items)
3) Are valid even if persons are unwilling to respond accurately

A) 1 only
B) 2 only
C) 3 only
D) 1 and 2 only
E) 1 and 3 only