Which of the following is the function of State Bank of Pakistan?

Which of the following is the function of State Bank of Pakistan?

اسٹیٹ بینک آف پاکستان کا مندرجہ ذیل میں سے کون سا کام ہے؟
Explanation

State Bank of Pakistan Act 1956 requires the Bank to "regulate the monetary and credit system of Pakistan" 

State Bank Of Pakistan
Founded 1-Jul-1948
Founded byM.A Jinnah
First GovernorZahid Hussain
First Female GovernorShamshad Akhtar
SBP Responsibitly implement monetary policy
HQKarachi, Sindh