Who helped France in Spain’s civil war?

Option a is correct because right after the declare of war America and Russia extended help to France against Germany and Italy.

Option b is incorrect because America and Russia were helping the Republicans in the Spanish civil War, whereas Germany and Italy helped Spain in the war.

Option c is incorrect because at that time Austria and Hungary were German supporters but they did not directly had a role in this war.

Option d is incorrect because Germany was supporting Spain whereas Japan had no role in this war.