A chef is cooking a pork chop for a customer's order. What temperature must it reach before it can be served to the customer?
a. 135 ⁰F (57 ⁰C)
b. 145 ⁰F (63 ⁰C)
c. 155 ⁰F (68 ⁰C)
d. 165 ⁰F (74 ⁰C)