Ian and Mia Married in Early 2017 and Purchased a New

Ian and Mia married in early 2017 and purchased a new home together. Each owned and lived in separate residences prior to the marriage. Ian purchased his residence 5 years ago for $190,000 and he added a master bedroom and bathroom addition at a cost of $40,000. Mia purchased her home three years ago for $135,000. In late 2017, Ian sold his residence for $510,000 and paid a sales commission of $8,000. After paying off his $80,000 mortgage balance, he received the remaining cash proceeds of $422,000. In late 2017 Mia sold her residence for $190,000 and paid a sales commission of $2,000. She had paid off her mortgage so she received $188,000 cash from the sale. If Ian and Mia file a joint tax return for 2017, how much gain do they recognize on their 2017 joint tax return from the sales of their previous homes?

A) 0
B) $22,000
C) $53,000
D) $84,000