ARM Directives question

I need to Store the bytes 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, and 0x0A in ROM, using only ARM Directives (No Instructions). And then allocate a byte of memory for the sum.
Then Use ARM instructions to retrieve the values from memory, add the retrieved values together, and store the sum in the byte allocated before. Can someone help me with that please. Thanks

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