Marlene needs to purchase AT LEAST 50 party decorations. The Party Palace charges $0.50 per decorative streamer and $0.25 per balloon, including tax. Which combination of streamers and balloons can Marlene purchase with $19.50 at the Party Palace?

A. 35 streamers and 15 balloons

B. 31 streamers and 18 balloons

C. 28 streamers and 23 balloons

D. 26 streamers and 25 balloons