Potatoes and rice are sources of complex which made sugar molecules linked in a chain?

Potatoes and rice are both sources of complex carbohydrates, which means that their sugar molecules are linked together in a chain. This is in contrast to simple carbohydrates, such as table sugar, which are made up of just two sugar molecules. Complex carbohydrates are more slowly digested than simple carbohydrates, which means that they release energy more gradually and help to keep blood sugar levels stable.