In a manufacturing process, two types of products flow through a three step process. Each step consists of a single machine. Product A spends $45$ seconds at the first step, $35$ seronds at the second step, and $50$ seconds at the third step. Product B spends $36$ seconds at the first step, $40$ seconds at the second step nd $25$ seconds at the third step. The demand rate for Product $A$ is $100$ units per hour and the demand te for Product B is $120$ units per hour.

There in the process is the bottleneck and what is is implied utilization?

Step $2,2\mathrm{.}31$

Step $3,2\mathrm{.}22$

tep $3,2\mathrm{.}75$

ep $1,2\mathrm{.}45$