Which of the Following Statements Illustrates an Internal Summary

Which of the following statements illustrates an internal summary?

A) "Second, you should sum the total of your monthly expenses."
B) "Today I will discuss the cause and effects of osteoporosis in men."
C) "So, remember to wear safety goggles, work in a well-ventilated area, and dispose of chemicals properly."
D) "After mixing in the nuts, you can move on to sifting the flour."
E) "It's really not a good idea to make your own furniture because it is so expensive and timely to do so."