Oil tumbles further into bear market, hits lowest price in 4 years as coronavirus fallout continues

**

· *Oil's bear market is on track for its worst week in four years.*
· *The global spread of coronavirus has rattled a market that was already vulnerable to the outbreak.*
· *Visit Business Insider's homepage for more stories.*

Oil fell to its lowest price since July 2017, just the latest in a slew of dismal...