Question

Which conjunction or disjunction is equivalent to the open sentence |a - 9| is less than or equal to 4?

A. a - 9 is more than or equal to 4 & a - 9 is less than or equal to 4

B. a - 9 is less than or equal to 4 OR a - 9 is than or equal to -4

C. a - 9 is less than or equal to 4 & a - 9 is less than or equal to -4

D. a - 9 is less than or equal to 4 & a - 9 is more than or equal to -4