There Are 16 Ounces in a Lb and 2

There are 16 ounces in a lb and 2.20 lbs in a kg. What would be the value of Avogadro's number if this constant was defined as the number of ¹²C atoms in 12 ounces of ¹²C?

A) 0.171 x 10²³
B) 6.02 x 10²³
C) 28.4 x 10²³
D) 171 x 10²³
E) 2050 x 10²³