Proportional relationship

Describe three ways to write the ratio that compares 4 electronic devices for every 3 people
A. 4 to 3, 3:4, 4/3
B. 4 to 3, 4:3, 3/4
C. 4 to 3, 4:3, 4/3
D. 3 to 4, 3:4, 3/4