Read the following context and choose the best option to answer the question.
Context: Pop and I went to a concrete yard today and ordered " pea gravel " for our patio ! Its gravel the size of ... peas ... duh ( as opposed to egg gravel for example . ) I just recieved the TON AND A HALF ... which weighs alot but is only a moderate size pile .
Question: What may be the reason to buy the gravel ?
Options: 
A. I want to finish planting .
B. I want to paint them .
C. I need some cat litter .
D. I am remodelling the patio .


D