FTSE 100 gains as investors hold out for economic rebound

(Reuters) - London's FTSE 100 rose on Friday at the end of a choppy week as investors weighed optimism about a revival in business activity against a surge in global coronavirus infections, while easyJet gained after taking more steps to boost liquidity.The low-cost airline rose 1.4% as it reported the sale and leaseback of six A320neo aircraft, shoring up its balance sheet to ride out the slump in air travel due to the COVID-19 pandemic.The blue-chip FTSE 100 was up 0.7%, with BP Plc and..