Hello!
The question starts with 97 and adds 2
The full question is:
97 + 99 + 101 + 103 + 105 + 107 + 109 + 111 + 113 + 115 + 117 + 119 + 121
Last 4 numbers ⇒ 115 + 117 + 119 + 121
You have to add the 4 numbers together
115 + 117 + 119 + 121 = 472
Your answer is B. 472