Utilize the input text as a context reference, choose the right relationship between 'fresh' and 'retail' from the options.
Options: founded by, subsidiary, director/manager, industry

The main Saudi stock index has plunged 12 percent this month as local retail investors dump shares in response to a fresh slide of oil prices, which has slashed the government's oil revenues, and high valuations of shares, which have deterred foreign investors from buying.
industry