Write an inequality to model the following situation.
A high school cross-country team needs to raise money for new uniforms. They plan to hold a community family-fun day. Tickets cost $5 each. A local business donated $1000, but the club needs at least $4,000. How many tickets will they need to sell?
A: Let t = total tickets to be sold, $1,000+ 5t ≥ $4,000
B: Let t = total tickets to be sold, $4,000+ 5t ≥ $1,000
C: Let t = total tickets to be sold, $4,000 - 5t ≥ $1,000
D: Let t = total tickets to be sold, $1,000 - 5t ≥ $4,000