The actual and standard direct materials costs for producing a specified quantity of product

are as follows:

Actual: $,51,000lbs.$ at $$5\mathrm{.}05,$$$257,550$

Standard: $50,000lbs.$ at $$5\mathrm{.}00,$$$250,000$

a$.$ $$2550$ unfavorable.

b$.$ $$2500$ unfavorable.

c$.$ $$7550$ unfavorable.

d$.$ $$50$ unfavorable.