The map of crop hearths indicates that (a coconuts, pigeonpeas, cowpeas, and coffee were first domesticated in East Asia.b. rice, soybeans, and walnuts were first domesticated in East Asia.c. maize, potatoes, squash, and peppers were first domesticated in East Asia.d. mango, taro, and coconuts were first domesticated in East Asia.e. yams, sorghum, and cowpeas were first domesticated in East Asia.