Oil futures rallied on Friday with the drop in the U.S. dollar fueling a gain for the week, the first in five weeks. April crude , which expired at the close, rose $1.76, or 4%, to settle at $45.72 a barrel on the New York Mercantile Exchange. May crude ended at $46.57 a barrel, up $1.04, or 2.3%. Based on the most-active contracts, oil futures climbed nearly 4% for the week.
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