A mobile crane's load chart shows a capacity of 40,000 lbs at a 30-foot radius with outriggers fully extended. If the operator must work at the same radius with outriggers retracted (on rubber tires), the operator should expect the capacity to:
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A
Remain the same because the radius has not changed
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B
Increase because rubber tires absorb shock better than outriggers
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C
Decrease significantly, often to 75% or less of the outrigger rating
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D
Double, because two axles share the load instead of four outriggers