Choose the situation that best fits the equation:
x - 6
a. Elena has fewer roses than Lin. Lin has 6 roses and Elena has x roses.
b. Elena has more roses than Lin. Lin has 6 roses and Elena has x roses.
c. Elena has half the roses Lin has. Lin has 6 roses and Elena has x roses.
d. Elena has twice as many roses as Lin. Lin has 6 roses and Elena has x roses.