Which situation does NOT describe a uniform probability model?

Responses
A A glass jar contains 1 red, 3 green, 2 blue and 4 yellow marbles.A glass jar contains 1 red, 3 green, 2 blue and 4 yellow marbles.
B The probability of each outcome when a single 6-sided die is rolled.The probability of each outcome when a single 6-sided die is rolled.
C The probability of each outcome when a dime is tossed.The probability of each outcome when a dime is tossed.
D A spinner has 4 equal sectors colored yellow, blue, green and red.A spinner has 4 equal sectors colored yellow, blue, green and red.

A glass jar contains 1 red, 3 green, 2 blue and 4 yellow marbles.A glass jar contains 1 red, 3 green, 2 blue and 4 yellow marbles.