Two flasks `A` and `B` have equal volumes. The molecules in flask `A` are moving two times faster than the molecules in flask `B`. The number of molecules in flask `A` is eight times the number of molecules in flask `B`. Which of the following is true about the number of collisions with the walls?

Options

A. The number of collisions with the walls in flask `A` is four times that in flasks `B`.
B. The number of collisions with the walls in flask `B` ia four times that in flask `A`.
C. The number of collisions with the walls in flask `A` is `16 times` that in flask `B`.
D. The number of collisions with the walls in flask `B` is `16 times` that in flask `A`.

Explanation

To solve the problem, we need to analyze the relationship between the number of molecules, their speeds, and the resulting number of collisions with the walls of the flasks.

### Step-by-Step Solution:

1. **Understanding the Variables**:
- Let \( N_A \) be the number of molecules in flask A.
- Let \( N_B \) be the number of molecules in flask B.
- Given: \( N_A = 8 \times N_B \) (the number of molecules in flask A is eight times that in flask B).
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