Wiskunde Multiple Choice Vraag uit Gricha's Wiskundige Vragenbank

Welke gelijkheid is correct ? (in het vectorvlak waar \(\small\boldsymbol{\overrightarrow{X}=\overrightarrow{OX} }\))
A. \(\small\boldsymbol{\overrightarrow{AC}=\overrightarrow{A}+\overrightarrow{C}}\)
B. \(\small\boldsymbol{\overrightarrow{AC}=\overrightarrow{A}\cdot \overrightarrow{C}}\)
C. \(\small\boldsymbol{\overrightarrow{AC}=\overrightarrow{BC}+\overrightarrow{AB}}\)
D. \(\small\boldsymbol{\overrightarrow{AC}=\overrightarrow{AB}+\overrightarrow{BC}}\)
E. \(\small\boldsymbol{\sqrt{\overrightarrow{AC}^{\: 2}}=\overrightarrow{AC}}\)

Which equality is correct ? ($\small\boldsymbol{\overrightarrow{X}=\overrightarrow{OX} }$)	A. $\small\boldsymbol{\overrightarrow{AC}=\overrightarrow{A}+\overrightarrow{C}}$
	B. $\small\boldsymbol{\overrightarrow{AC}=\overrightarrow{A}\cdot \overrightarrow{C}}$
	C. $\small\boldsymbol{\overrightarrow{AC}=\overrightarrow{BC}+\overrightarrow{AB}}$
	D. $\small\boldsymbol{\overrightarrow{AC}=\overrightarrow{AB}+\overrightarrow{BC}}$
	E. $\small\boldsymbol{\sqrt{\overrightarrow{AC}^{\: 2}}=\overrightarrow{AC}}$

Antwoord C is correct want $\overrightarrow{AC}=\overrightarrow{BC}+\overrightarrow{AB}\\\Leftrightarrow\overrightarrow{AC}-\overrightarrow{BC}=\overrightarrow{AB}\\\Leftrightarrow\overrightarrow{AC}+\overrightarrow{CB}=\overrightarrow{AB}\\\Leftrightarrow\overrightarrow{AB}=\overrightarrow{AB}$

Which equality is correct ? (\(\small\boldsymbol{\overrightarrow{X}=\overrightarrow{OX} }\))	A. \(\small\boldsymbol{\overrightarrow{AC}=\overrightarrow{A}+\overrightarrow{C}}\)
	B. \(\small\boldsymbol{\overrightarrow{AC}=\overrightarrow{A}\cdot \overrightarrow{C}}\)
	C. \(\small\boldsymbol{\overrightarrow{AC}=\overrightarrow{BC}+\overrightarrow{AB}}\)
	D. \(\small\boldsymbol{\overrightarrow{AC}=\overrightarrow{AB}+\overrightarrow{BC}}\)
	E. \(\small\boldsymbol{\sqrt{\overrightarrow{AC}^{\: 2}}=\overrightarrow{AC}}\)