What is the next number in the series: 5, 4, 9, 13, 22, 35, __?

by

A. 55
B. 57 
C. 50
D. 49

🧠 Explanation (Math):

Given: 5, 4, 9, 13, 22, 35, __
Step 1: Differences = −1, +5, +4, +9, +13
Step 2: Pattern in differences: 5, 4, 9, 13, next = 22 (sum of previous two 9+13)
Step 3: Next term = 35 + 22 = 57
Final Answer: 57