A Microbiology Student with a Visual Disability Is Viewing a Sample

A microbiology student with a visual disability is viewing a sample of Bacillus endospores in a phase contrast microscope that is linked to an iPad. By "stretching" the image on the iPad screen, the student can increase the apparent size of the endospores. How does this manipulation affect
Resolution and contrast? (No software is being used to alter the image!)

A) Only the magni?cation can be increased; resolution and contrast are unchanged.
B) Contrast will improve because the microscope is phase-contrast.
C) Both magni?cation and resolution increase; contrast is unchanged.
D) Resolution and magni?cation will decrease because the screen is not as good as the human eye.