Which of the following sets is a null set? A. The set of counting numbers between 1 and 2
B. The set of months with 29 days
C. The set of vowels in the English Alphabet
D. The set of letters in the word “classroom”

The image of abc is a'b'c. what transformations would result in this image? abc is reflected over the line x = 1, then is rotated -90° around the origin. abc is reflected over the line y = x - 1, then t: (x, y) → (x - 1, y - 1). abc is rotated 90° around the origin, then is reflected over the y-axis. abc is rotated -90° around the origin, then is reflected over the line y = -1.