Harry's Pepperoni Pizza Parlor Produced 10,000 Large Pepperoni Pizzas Last

Harry's Pepperoni Pizza Parlor produced 10,000 large pepperoni pizzas last year that sold for $10 each. This year Harry's again produced 10,000 large pepperoni pizzas (identical to last year's pizzas)
But sold them for $12 each. Based on this information, we can conclude that Harry's production of
Large pepperoni pizzas this year

A) increased nominal GDP by $20,000 but left real GDP unchanged.
B) increased nominal GDP by $120,000 and increased real GDP by $100,000.
C) left nominal GDP unchanged but increased real GDP by $20,000.
D) increased nominal GDP by $120,000 but left real GDP unchanged.