Question

An international climate organization classifies regional sustainability projects into four distinct intervention tiers based on three quantitative indicators: Carbon Offset Potential ($C$, in kilotons/yr), Community Impact Score ($I$, on a 1–100 scale), and Local Matching Funds ($M$, as a percentage of total budget).

The evaluation criteria for the tiers are defined as follows:
- Tier A (Immediate Funding): Requires High Carbon Offset Potential ($C \ge 50$), High Community Impact Score ($I \ge 75$), AND Secured Matching Funds ($M \ge 30\%$).
- Tier B (Technical Assistance): Requires High Community Impact Score ($I \ge 75$) AND Unsecured Matching Funds ($M < 30\%$), regardless of Carbon Offset Potential.
- Tier C (Co-Financing Mandatory): Requires High Carbon Offset Potential ($C \ge 50$) AND Secured Matching Funds ($M \ge 30\%$), BUT Low Community Impact Score ($I < 75$).
- Tier D (Deferred Review): Assigned to any project with Low Carbon Offset Potential ($C < 50$) AND Low Community Impact Score ($I < 75$), regardless of Matching Funds status.

Four specific projects are currently under review:
- Project Alpha: $C = 65$, $I = 82$, $M = 35\%$
- Project Beta: $C = 40$, $I = 88$, $M = 15\%$
- Project Gamma: $C = 55$, $I = 60$, $M = 40\%$
- Project Delta: $C = 30$, $I = 50$, $M = 45\%$

Match each project on the left to its correct intervention tier on the right.