Which types of buses are smaller or used for conversions?

The choice indicating Type A and B buses is correct because these types are generally smaller and more adaptable for conversion purposes.

Type A buses are usually built on a truck chassis or cutaway van chassis, making them compact and ideal for various modifications. They are often used in contexts such as small school routes, shuttles, or accessible transportation options. Their design allows for a wide range of applications, including conversions for specialized uses like wheelchair accessibility or transporting small groups.

Similarly, Type B buses are also built on a chassis but are larger than Type A. They typically have a larger passenger capacity while still remaining smaller than the larger Type C and D buses. Type B buses often feature some degree of customization, allowing for conversions for specific transport needs, which contributes to their versatility.

In contrast, Type C and D buses tend to be larger, often used for standard school transportation or that require higher passenger capacity. Their size and design generally make them less suitable for conversions than Types A and B.