You are helping to select cryptography standards for an enterprise application. It is already using AES$-128$ as its symmetrical algorithm, and management wants a comparably strong hash function. However, performance is also an issue. What hash algorithm would be a good place to start your evaluation? Choose the best response.

a$.$

MD$5$

b$.$

SHA$-1$

c$.$

SHA$-2$

d$.$

SHA$-3$