A has concluded a contract with B in terms of which B must paint the exterior of A's house for R20.000 while A is on holiday. However, due to a mix up in addresses (not caused by A) B painted C's house instead, who was also on holiday during this period. C's house also seemed to need a fresh coat of paint. Can B claim anything from A or C? If not, explain fully. If so, explain in detail which action B can use, how the claim should be quantified and any defences that A or C may raise against the claim by B