The number of IRRs equals the number of changes in the sign of the cash flow. In this case, from negative to positive and then back to negative. Although 38% seems appropriate, one should not automatically discount the value of 260%.
Check answers by calculation:
10,000 ÷ 1.38 - 10,000 ÷ 1.382 = 1995.38
And:
10,000 ÷ 3.6 - 10,000 ÷ 3.62 = 2006.17
Both discount rates give NPVs of approximately zero and thus, are IRRs.