Understanding the meaning of the sentence : the clause 'Currently 26 billion barrels a year' is for ' world's oil consumption.
A. world consumption of oil is rising at a rate of - "Currently 26 billion barrels a year" modifies the current consumption of oil
B. the world is consuming oil at an increasing rate of - "Currently 26 billion barrels a year" - modifies "the world"
C. the world’s oil is being consumed at the increasing rate of - "Currently 26 billion barrels a year" - modifies "the worlds oil"
D. the rise in the rate of the world’s oil consumption is - "Currently 26 billion barrels a year" - modifies "the rate of rise"