Solve the Compound Inequality $\phi$ , Use Interval Notation to Express the Solution Set and Interval

Multiple Choice

Solve the compound inequality. Other than $\phi$ , use interval notation to express the solution set and graph the solution set
on a number line.
- $12 < 3 x \leq 21$

A) $( 4,7 ]$

B) $( - \infty , 4 ] \cup ( 7 , \infty )$

C) $[ 4,7 )$

D) $( - \infty , 4 ) \cup [ 7 , \infty )$