Robertson bought a block game for his son. the game contained 20 blocks. his son used 2/5 of the blocks to make a building. how many blocks were used in the building?

Which is a logical conclusion based on the given information? a. figure abcd is a rhombus by the definition of a rhombus. b. segment ac is congruent to segment dc by cpctc. c. angle acb is congruent to angle adc by the angle-side-angle theorem. d. triangle acd is congruent to triangle cab by the hypotenuse-leg theorem.