John Is Using PowerPoint to Create an Extensive Marketing Presentation

Multiple Choice

John is using PowerPoint to create an extensive marketing presentation and he keeps modifying the same slide layout by adding new placeholders for pictures and adjusting the text indents in the content placeholder. John wants to modify his presentation so he can work more efficiently.
How can John solve his problem of having to modify the placeholders on all of his slides?

A) Use a standard slide layout.
B) Adjust indent levels on the Slide Master.
C) Create a custom slide layout.
D) Use a different design theme.