Which of the Following Students Has an Incremental View of Ability

Which of the following students has an incremental view of ability?

A) Cassidy is trying different strategies for learning her vocabulary words.She is sure she will find a strategy that works for her.
B) Devon knows his dad did well in math when he was a student,but Devon believes he got his mom's genes and can't do as well as his dad.
C) Staci makes good grades in literature,but she doesn't understand science.She knows there's nothing she can do to make high grades in science.
D) Marcus's teacher asked him if he wanted to use the tutorial on the computer.He said it wouldn't help.He said his teachers have always told him he doesn't have a mind for math.