ITMC 2018 Grade 5 National Preliminary set01 Question 23

At the 2018 FIFA World Cup, 32 teams are divided into eight groups A–H of four teams. In the first round, every pair within a group plays exactly one match. A win gives 3 points and a loss gives 0; a draw gives each team 1 point. The two highest-scoring teams in each group advance to the second round.

In the first-round Senegal–Japan match, Senegal leads 1–0. The teams then score three more goals in total. Which outcome is impossible?