Atoms, nuclei and radiation — practice question

In a nucleus of the nuclide $^{37}_{17}\text{Cl}$, how many up quarks are there, and how many down quarks are there?

• Aup quarks $51$, down quarks $60$
• Bup quarks $54$, down quarks $57$
• Cup quarks $57$, down quarks $54$
• Dup quarks $60$, down quarks $51$