Read the following context and choose the best option to answer the question.
Context: I ' m pretty confident I did good . Multiple Choice on a chem test is a weird thing . I mean asking me to caluclate answers is one thing but when you have to calculate then pick a letter it 's kind of weird . but it made some parts super easy .
Question: What would they have used to calculate an answer ?
Options: 
A. Scientific calculator
B. Textbook
C. None of the above choices .
D. Smart phone calculator


A