Please help!! Richard Trevithick's version of the steam engine was much smaller than previous models. Why were his modifications so important to the success of the Industrial Revolution?

A. Trevithick made the design plans for his engine free to anyone who wanted to build one for his own factory
B. Trevithick's engine was used in the first locomotive engine, which revolutionized how materials and products were transported.
C. Trevithick's engines wer so small that individuals bought them for their homes, in an effort to revive cottage industries.
D. Trevithick's engine was used to build smaller factories, which took up less room and left space for even more factories.