If a number p is prime, and 2p+5= q, where q is also prime, then the decimal expansion of 1/q will produce a decimal with q-1 digits. If this method produces a decimal with 166 digits, what is the units digit of the product of p and q? Choose the correct choice from the following answers.
A) 1 B) 2 C) 5 D) 7 E) 9
2/9 = 0.2222222222222.. (a repeating pattern one digit long)   2
<result>B</result>
If a number p is prime, and 2p+5= q, where q is also prime, then the decimal expansion of 1/q will produce a decimal with q-1 digits. If this method produces a decimal with 166 digits, what is the units digit of the product of p and q?