Pattern: 11 × 2 + 4 = 26, 26 × 3 + 15 = 83 (not 67 or 74), 83 × 4 + 70 = 402. Given series has 338 instead of 402, suggesting pattern variation. Still, 83 is the only logical fit among options. Pattern involves multiplying by consecutive integers (2,3,4,5) and adding values that may be primes or odd numbers.