A lent Rs. 5000 to B for 2 years and Rs. 3000 to C for 4 years on simple interest at the same rate of interest and received Rs. 2200 in all from both of them as interest. The rate of interest per annum is:

1. A Option A: 5%
2. B Option B: 7%
3. C Option C: 8%
4. D Option D: 10%

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