The length of a rectangle is 3 times its width. If the width of the rectangle is 6 inches, what is the rectangle's area, in square inches?  Choose the correct choice from the following.
A) 30 square inches
B) 108 square inches
C) 68 square inches
D) 89 square inches
E) 92 square inches

Rationale: "if the width is 6 in and the length is 3 times the width , then the length is 3 * 6 = 18 in the area is given by 6 * 18 = 108 square inches correct answer b"
Answer: B