In Griggs v$.$ Duke Power, how did the selection

devices used by Duke Power create a disparate

impact?

In North Carolina, the census of $1960$ indicated

that while $34\%$ of White males had completed

high school, only $12\%$ of Black males had done

so$.$

The use of the Wonderlic and Bennet tests

resulted in $58\%$ of Whites passing the tests as

compared with only $6\%$ of Blacks.

Neither the high school diploma requirement nor

the use of the Wonderlic and Bennet tests was

job related.

All of the above.

a and $b.$