Refer to the Following Recipe to Answer the Question $1 \frac{1}{2}$

Multiple Choice

Refer to the following recipe to answer the question. Give your answer as a mixed numeral.
Grandma's Fork Cookies
$1 \frac{1}{2}$ cup brown sugar
$1 \frac{1}{2}$ cup white sugar
$1 \frac{1}{4}$ cup shortening
1 pinch salt
3 eggs
$2 \frac{1}{2}$ tsp soda
$2 \frac{1}{4}$ tsp cream of tartar
$1 \frac{1}{2}$ tsp vanilla
Cream sugars and shortening. Beat in remaining ingredients. Add flour to stiffen like regular cookie dough. Roll into balls, then flatten with a fork. Cook until brown.
-Find the amount of cream of tartar needed if you take $1 \frac{1}{2}$ times the recipe.

A) $3 \frac{3}{4} \mathrm{tsp}$
B) $3 \frac{1}{2} \mathrm{tsp}$
C) $4 \frac{1}{8} \mathrm{tsp}$
D) $3 \frac{3}{8} \mathrm{tsp}$