Anthony Has Added the Vectors Listed Below and Gotten the Result

Multiple Choice

Anthony has added the vectors listed below and gotten the result $\overrightarrow { \mathbf { R } } = 9 \hat { \mathbf { i } } + 4 \hat { \mathbf { j } } + 6 \hat { \mathbf { k } }$ .What errors has he made? $\overrightarrow { \mathbf { A } } = 3 \tilde { \mathbf { i } } + 4 \tilde{ \mathbf { j } } - 5 \tilde { \mathbf { k } }$ $\overrightarrow { \mathbf { B } } = - 3 \hat { \mathbf { i } } + 2 \hat { \mathbf { j } } + 8 \hat { \mathbf { k } }$ $\overrightarrow { \mathbf { C } } = 3 \hat { \mathbf { i } } - 2 \hat { \mathbf { j } } + 2 \hat { \mathbf { k } }$

A) He lost the minus sign in vector $\vec { B }$ .
B) He read the $2 \tilde { \mathbf { k } }$ in $\overrightarrow { \mathrm { C } }$ as $3 \tilde { \mathbf { k } }$ .
C) He lost the minus sign in vector $\overrightarrow { \mathrm { A } }$ .
D) All of the above are correct.
E) Only (a) and (b) above are correct.