(c) Write one syntax to enable clock for GPIOA, GPIOB and USARTI. [3 Marks] [C01, PO1, C2) (d) Write a syntax to configure GPIOAI and GPIOA2 as input floating, GPIOA3 and GPIOA4 as input analog input and GPIOA6 as general purpose push-pull output. [3 Marks) [C01, PO1, C2) (c) Write one syntax to enable clock for GPIOA, GPIOB and USARTI. [3 Marks] [C01, PO1, C2) (d) Write a syntax to configure GPIOAI and GPIOA2 as input floating, GPIOA3 and GPIOA4 as input analog input and GPIOA6 as general purpose push-pull output. [3 Marks) [C01, PO1, C2)