Can I say,<br/><br/>(a) The fruit vendor gave the customers (at) a reasonable price every time. <br/><br/>(b) The fruit he sells are at a reasonable price.<br/><br/>(c) He sells the fruit at a reasonable price. <br/><br/>(d) He sells many types of fruit at a reasonable price. <br/><br/>(e) All his fruit are at a reasonable price.