I cannot for the life of me figure this out

ipose Angelo Sessa. owner oi Sezz Medi Brick Oven Pizza in NYC, earns $350,000 In revenue pi 1r. He spends $300 a month on ash wood ior his stove, $2000 a month on rent, and $1500 a nth on ingredients He used to be a lawyer and earned $240,000 a year before he opened up 2 Medi. Normal profit for a pizza business is $30,000. It Angelo switches to oak wood to fire hi: us and oak costs an extra $2500 each month. but this change causes his revenues to increase 5351.000. What is Angela's opportunity cost of production? 1) $342,000 Bi $321,600 0} $351,600 D) $351,000