A piece of climbing equipment at a playground is 6 feet high and extends 4 feet horizontally. A piece of climbing equipment at a gym is 10 feet high and extends 6 feet horizontally. Which statement best compares the slopes of the two pieces of equipment?
a Because Five-thirds greater-than three-halves, the slope of the climbing equipment at the gym is greater.
b Because Five-thirds less-than three-halves, the slope of the climbing equipment at the playground is greater.
c Because Three-fifths greater-than two-thirds, the slope of the climbing equipment at the gym is greater.
d Because Three-fifths less-than two-thirds, the slope of the climbing equipment at the playground is greater.