HELP ASAP Which of the following is NOT a requirement of a good test?

A) Heritability
B) Validity
C) Standardization
D) Reliability

I could not find the answer online because it is saying an answer choice that is not there please help!!

Two conductors, a and b, are each in the shape of a tetrahedron. but of different sizes. they are charged in the following manner: 1. tetrahedron a is charged from an electrostatic generator to charge q. 2. tetrahedron a is briefly touched to tetrahedron b. 3. steps 1 and 2 are repeated until the charge on tetrahedron b reaches a maximum value. if the charge on tetrahedron b was q/4 after the first time it touched tetrahedron a. what is the final charge qbmax on tetrahedron b?