$\begin{array}{1 1} (a)\; \text{This carries blood from left side of the heart to lungs and then back to right side} \\ (b)\; \text{This carries blood from right side of the heart to lungs and then back to left side } \\ (c)\; \text{This carries blood from left side of the heart to the right side and then to the lungs} \\ (d)\; \text{This carries blood from lungs to left side of the heart and then back to right side} \end{array}$
