Find the Distance (Correct to Two Decimal Places) Between the Given

Multiple Choice

Find the distance (correct to two decimal places) between the given parallel planes. $8 x + 7 y - 2 z = 12$ and $18 x + 20 y - 6 z = 50$
Select the correct answer.

A) $4.51$
B) $2.51$
C) $6.51$
D) $0.51$
E) $9.51$