Ivan, a nonresident alien, is a professional boxer. Ivan comes to the US for a professional fight in Philadelphia, which he wins. While in the US, Ivan buys and sells 100 shares of Proctor & Gamble stock for a tidy profit. Ivan's effectively connected income consist of:

Group of answer choices

only the gain on the sale of the stock.

only the purse from the boxing match.

both the gain on the sale of the stock and the purse from the boxing match.

neither the gain from the sale of the stock nor the purse from the boxing match.