Sentence Correction (SC) | Re: Since 2005, a 50-acre chunk of hillside — almost eight million cubic

Since 2005 ,a 50-acre chunk of hillside — almost eight million cubic yards ofrock, enough to fill 60 football stadiums to the top of the bleachers, eight stories up — had been sliding slowly downhill in the one of the canyons outside Malibu; if and when it will stop remains unclear to geologists.

A. rock, enough to fill 60 football stadiums to the top of the bleachers, eight stories up —had been sliding

B. rock, which is enough to fill 60 football stadiums to the top of the bleachers
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