Find a recurrence relation that represents the following recursive function: int rec( int n) { if(n < 2) return 1; else return rec(n - 1) + rec(n - 2): O a. T(n) = T(n/2) + T(n/3) + 1 O b. T(n) = T(n-1) + T(n-2) + n O . T(n) = 2T(n/2) + 1 O d. T(n) = T(n-1) + T(n-2) + 1

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