Answer:
B. 9 < 10, 
C. 10 > 9, 
D. 9 (is less than or equal to ) 10
Explanation:
A.10 < 9, not true 10 is greater than 9
B. 9 < 10, true 9 is less than 10
C. 10 > 9, true 10 is greater than 9
D. 9 (is less than or equal to ) 10 true 9 is less than or equal to 10